What were the first trees to develop the nodule system?

Answers

Answer 1

The first trees to develop the nodule system were legume trees, specifically those belonging to the family Fabaceae.

The nodule system refers to the formation of root nodules, which are specialized structures that house nitrogen-fixing bacteria. This symbiotic relationship allows legume trees to convert atmospheric nitrogen into a usable form for plant growth.

The first trees to develop the nodule system were likely leguminous trees such as acacias, alders, and eucalyptus. These trees have a symbiotic relationship with nitrogen-fixing bacteria in their roots, which form nodules that provide the tree with a source of nitrogen. This adaptation allowed these trees to thrive in nutrient-poor soils and was a significant factor in the evolution of many modern ecosystems.

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Related Questions

Which of the statements are true about the eukaryotic cell cycle? Select all that apply. The M phase consists of two events: prophase and cytokinesis. Cells that have fully differentiated and no longer divide are said to be in G0 phase. There are two stages to the cell cycle: M phase and interphase. There are three phases of interphase called: G1 phase, S phase and G2 phase. Interphase is typically the shortest of the two stages of the cell cycle.

Answers

The statements that are true about the eukaryotic cell cycle are:

Cells that have fully differentiated and no longer divide are said to be in G0 phase.There are three phases of interphase called: G1 phase, S phase, and G2 phase.

The eukaryotic cell cycle consists of various stages and events. Here are the correct statements:

Cells that have fully differentiated and no longer divide are said to be in G0 phase. G0 phase represents a non-dividing state where cells have exited the cell cycle and are in a quiescent stage.

There are three phases of interphase called: G1 phase, S phase, and G2 phase. Interphase is the longest stage of the cell cycle, where the cell prepares for division. G1 phase involves cell growth and preparation for DNA replication, S phase is the synthesis phase where DNA replication occurs, and G2 phase is the preparation for cell division.

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the concentration of carbon dioxide in the atmosphere has been increasing for many years, how might this increase affect photosynthesis

Answers

Answer:

the answer is

Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.Increasing the light intensity increases the rate of photosynthesis, until some other factor  a limiting factor  becomes in short supply. At very high light intensities,photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.

Explanation:

This equation represents a biological process. In which organelle is this process completed?
C6H12O6 + O2 --> CO2 + H20 + ATP


Cell membranes

Mitochondria

Chloroplasts

Ribosomes

Answers

Answer:

Mitochondria

Explanation:

That equation is for Cellular Respiration and it takes place in the Mitochondria in the Cytoplasm

Which of the following is a way that new DNA can be introduced to bacteria?

 A. It can be absorbed.

 B. It can be injected by a virus.

 C. It can be injected with a needle.

 D. It can be injected into a food source and eaten by the bacteria.

Answers

Answer:2

Explanation:d

Explanation:

a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.

Which is the most accurate statement with regard to the relationship between the neutral stimulus and conditioned stimulus in classical conditioning? They are the same stimulus. They are distinguished by the different responses they produce. They both produce responses without learning occurring, They produce very different responses at different times.

Answers

The most accurate statement with regard to the relationship between the neutral stimulus and conditioned stimulus in classical conditioning is that they produce very different responses at different times.so option D is correct.

The neutral  encouragement is a  encouragement that doesn't naturally produce a particular response. The conditioned  encouragement, on the other hand, is a  encouragement that regularly produces a particular response. In classical  exertion, the neutral  encouragement is associated with the conditioned  encouragement, which  also produces the asked  response.

The neutral  encouragement doesn't naturally produce a response and doesn't  evoke a response until it has been associated with the conditioned  encouragement. The conditioned  encouragement,  still, produces a response as soon as it's presented, indeed before the organism has had a chance to learn the association,

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What part of the reproductive system is highlighted below?
• A. Urethra
• B. Seminal vesicles
O c. Epididymus
• D. Vas deferens

What part of the reproductive system is highlighted below? A. Urethra B. Seminal vesiclesO c. Epididymus

Answers

Your answer is D. Vas Deferens
What part of the reproductive system is highlighted below? A. Urethra B. Seminal vesiclesO c. Epididymus

How are humans impacting the carbon cycle positively?

Answers

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.

You were looking at a cell under a microscope. It had a large central vacuole, a nucleus, a cell wall and mitochondria. You concluded that it is a:
Responses

Eukaryotic animal cell
Eukaryotic animal cell

Hybrid of a plant and animal cell
Hybrid of a plant and animal cell

Eukaryotic plant cell
Eukaryotic plant cell

Prokaryotic bacterial cell

Answers

On the presence of a large central vacuole, a nucleus, a cell wall, and mitochondria, the cell you were looking at is most likely a eukaryotic plant cell. Option C is correct.

Eukaryotic cells are more complex and larger than prokaryotic cells, which lack a nucleus and most organelles. Eukaryotic cells are found in animals, plants, fungi, and protists.

However, Eukaryotic cells have a nucleus, membrane-bound organelles such as mitochondria, and a cytoskeleton. Plant cells, in addition to these organelles, also have a cell wall, a large central vacuole, and chloroplasts for photosynthesis. The presence of a large central vacuole, a cell wall, and mitochondria in the cell you observed suggest that it is a plant cell.

Hence, C. is the correct option.

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--The given question is incomplete, the complete question is

"You were looking at a cell under a microscope. It had a large central vacuole, a nucleus, a cell wall and mitochondria. You concluded that it is a: Responses A) Eukaryotic animal cell B) Hybrid of a plant and animal cell C) Eukaryotic plant cell D) Prokaryotic bacterial cell."--

After earthquakes, hot springs sometimes stop bubbling, and new hot springs form. Why might this be

Answers

Answer:

The magma moved. The crystaline water is no longer being heated by the magma so it stops being a hot spring.

Answer:

The magma melts

Explanation:

Why might a person who has skin cancer later
develop a tumour on her lungs?

Answers

Answer:  The cancer of the skin metastasizes into the lymph joints (spreads), and they run everywhere in the body, dropping bad cells when they go. the lungs are super vascular (carry a lot of blood flow), and so is the organ. Therefore, they are favorite places for the cancer cells to end up and grow.

Explanation:  hoped this helped:)) you can just search it up

Results showed that people with nonmelanoma skin cancer were at an increased risk of developing the deadly skin cancer melanoma, and that women with nonmelanoma skin cancer were at increased risk of lung cancer and breast cancer, according to the study. Common sites for metastases include the lymph nodes, lungs, liver, bones and brain. Melanoma tumors that have metastasized to other parts of the body are still considered melanoma. For example, melanoma found in the lungs is called metastatic melanoma of the lung or melanoma with lung metastases. Skin cancer is the out-of-control growth of abnormal cells in the epidermis, the outermost skin layer, caused by unrepaired DNA damage that triggers mutations. These mutations lead the skin cells to multiply rapidly and form malignant tumors. Hope this helps!

The type of bone fracture characterized by the broken ends of the bone protruding through the skin is known as a(n)
a. closed (simple) fracture
b. open (compound) fracture
c. impacted fracture
d. Pott's fracture
e. greenstick fracture

Answers

The type of bone fracture characterized by the broken ends of the bone protruding through the skin is known as an open (compound) fracture, which is option b.

An open fracture occurs when the broken ends of the bone pierce through the skin, creating an external wound that communicates with the fracture. This can increase the risk of infection and requires urgent medical attention to prevent complications.

In contrast, a closed (simple) fracture is a type of bone fracture where the bone is broken but does not pierce through the skin. Instead, the broken bone ends remain beneath the skin.

An impacted fracture is a type of fracture where the broken ends of the bone are driven into each other, creating compression and shortening of the bone. This can occur when a bone is subjected to a high amount of force, such as in a car accident.

Pott's fracture is a specific type of ankle fracture that involves the distal fibula, which is the smaller bone in the lower leg. This type of fracture occurs when the ankle is forcefully twisted or turned, resulting in a break in the fibula bone.

Finally, a greenstick fracture is a type of fracture that occurs in children and is characterized by an incomplete break in the bone. In this type of fracture, the bone bends and partially breaks, rather than completely breaking.

So, the open (compound) fracture, is correct alternative. (option b)

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Which is a common practice for farmers to yield higher crop production?
A) overplowing mixes the nutrients in the soil
B) consistently plant the same crop every year
C) allow later-successional growth to replace nutrients
D) keep the area planted with early-successional species

Answers

Answer:

D) keep the area planted with early-successional species

Explanation:

Answer:

D) keep the area planted with early-successional species

Explanation:

got it right on edge

Of two stars of spectral class B5, one has broad hydrogen lines and the other has narrow hydrogen lines. How do these stars differ physically?

Answers

The physical difference between the two stars of spectral class B5 is that the star with broad hydrogen lines has a higher temperature and faster rotation compared to the star with narrow hydrogen lines.

The width of the hydrogen lines in a star's spectrum provides information about its physical properties. In this case, the star with broad hydrogen lines indicates a higher temperature and faster rotation compared to the star with narrow hydrogen lines.

The broadening of spectral lines is primarily caused by two factors: temperature and rotation. Higher temperatures lead to increased thermal motion of particles in the star, resulting in broader spectral lines. Therefore, the star with broad hydrogen lines has a higher temperature than the star with narrow hydrogen lines.

Additionally, the rotation of a star can also affect the broadening of spectral lines. A faster rotation produces a larger Doppler shift, which leads to broader lines in the spectrum. Therefore, the star with broad hydrogen lines is likely rotating at a higher speed than the star with narrow hydrogen lines.

Overall, the presence of broad and narrow hydrogen lines in the spectra of these B5 stars suggests differences in temperature and rotation, indicating variations in their physical characteristics.

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Please Answer These Math Questions LOT OF QUESTIONS LOTS OF POINTS (Questions in picture)

Please Answer These Math Questions LOT OF QUESTIONS LOTS OF POINTS (Questions in picture)

Answers

Answer:

this is not science questions it is of maths

Answer:

j

Explanation:

Erik, a forensic technician, is called to a crime scene to determine if there are any fingerprints. He uses the process of photoluminescence to find the evidence. Which scientific field did he use?.

Answers

Erik, a forensic technician, is called to a crime scene to determine if there are any fingerprints. He uses the process of photoluminescence to find the evidence. he did this by using Chemistry field.

Usually, a close visual inspection of the crime scene is used to check for the presence of blood. However, it's possible that there is blood present in levels that are too small to notice with the unassisted eye or that blood at the site has already been "cleaned up" before the crime scene team arrived.

Forensic techniques include DNA analysis, fingerprinting, voice recognition, handwriting analysis, ballistics, autopsy, and others to determine the cause of a crime or death. In forensic analytical techniques, the most significant fields of physical, life, and materials science are applied.

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An insertion sequence contains a large deletion in its transposase gene. Under what circumstances would this insertion sequence be able to transpose?.

Answers

(3) "There is another transposable element of the same type present in the cell and it expresses a functional transposable enzyme.​​​​​" is the circumstance that this insertion sequence would be able to transpose.

Bacterial insertion sequence is a type of straightforward transposon. DNA segments known as transposons have the capacity to relocate throughout the genome. Only the genes necessary for their transposition are carried by insertion sequences.

The protein needed for the transposition of bacterial insertion sequences is called transposase. The binding sites for this protein are the brief repetitions found at both ends of the bacterial transposons.

Transposase's primary job is to make staggered incisions in the target DNA region where the insertion sequence will be put. The target DNA has a gap created by the transposase cut, which is where the bacterial transposons are placed.

It wouldn't be able to transpose if a deletion mutation eliminated the transposase gene from the insertion sequence.

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Question correction:

An insertion sequence contains a large deletion in its transposase gene. Under what circumstances would this insertion sequence be able to transpose?

There is another transposable element that produces reverse transcriptase present in the cell.The transposable element is transcribed, and the host cell also expresses a functional reverse transcriptase that then makes a DNA copy.There is another transposable element of the same type present in the cell and it expresses a functional transposase enzyme.This transposable element can never transpose due to the deletion in its transposase gene.The insertion sequence will be able to transpose if it loses its inverted repeats.

the energy plants gain through photosynthesis is stored in

Answers

The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar

In a popular movie, a salt water fish jumped into a freshwater drain to be reunited with his father.
Using your knowledge of osmosis and solutions what would have really happened to the cells in the
fish?
А
The cells would have expanded and burst because of water entering the cells.
B
The cells would have shrunk as water left the cells.
с C
The cells would have remained the same as the freshwater is isotonic.
D
The cells would have become freshwater cells until reaching the ocean.

Answers

Answer:

A

Explanation:

fresh water is hypotonic to the fish cell,that means water will diffuse into fish cells by osmosis because a hypotonic solution contains low solute concentration.

In the development of C. elegans, an embryo of 1090 cells then loses 131 cells due to what process? o apoptosis O degradation O migration O inhibitio

Answers

The loss of 131 cells in the development of C. elegans is due to the process of apoptosis, a programmed cell death mechanism.

The process by which an embryo of C. elegans loses 131 cells is apoptosis. Apoptosis is a programmed cell death mechanism that occurs naturally during development to eliminate unnecessary or excess cells.

In the case of C. elegans, the removal of specific cells through apoptosis is a crucial part of its normal development and results in the precise formation of its adult body structure.

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What is active transport?
A. an organism's way of getting materials to its
community
B. a cell's way of transporting materials
C. the nucleus's way of transporting genetic
information
D. when peroxisomes moving materials in a cell

Answers

Active transport is one type of transport used by cells to move molecules from one side to the other of the cell membrane. Option B. a cell's way of transporting materials

What is active transport?

Active transport is one of the three cellular transmembrane transports. The other two are passive transport and simple diffussion.

Active transport acts against the electrochemical gradient, so it does need the energy to transport substances.

It carries molecules from a low concentration side of the membrane to a high concentration side.

The used energy comes from ATP (Na-K bomb) or the membrane's electric potential.

Carrier proteins are involved in active transport.

Option B. a cell's way of transporting materials

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According to one anti-enhancement argument, genetic enhancements threaten to change human nature and that is a serious moral concern because it is:
Unnecessary.
Unnatural.
Unfair.
Undermining of our genetic redundancy.
Underwhelming.

Answers

According to one anti-enhancement argument, genetic enhancements are seen as a serious moral concern because they are considered "unnatural."

The argument suggests that altering human nature through genetic enhancements goes against the natural order of things and disrupts the inherent essence of what it means to be human.

Advocates of this argument contend that human nature is defined by a combination of genetic inheritance and environmental factors, and any intentional alteration of the genetic code undermines this delicate balance.

They argue that human beings should accept themselves as they are, embracing their inherent strengths and weaknesses, rather than seeking to artificially enhance certain traits or abilities.

This concern stems from the belief that genetic enhancements may lead to a future society where individuals are no longer equal, with disparities in physical and cognitive capabilities becoming more pronounced.

It is argued that this would create an unfair advantage for those who can afford or access genetic enhancements, perpetuating societal inequalities.

However, it is important to note that these arguments are not universally accepted, and there are alternative viewpoints that support the ethical use of genetic enhancements to improve the human condition. Therefore, the correct answer is Unnatural.

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which of the following is not an important biological function of lipids? which of the following is not an important biological function of lipids? insulation regulation of growth and development energy storage protection of internal organs and tissues all of these choices are functions of lipids.

Answers

Option 5 is the correct answer. All the listed options are important biological functions of lipids.

Lipids are a type of organic molecule that is made up of fatty acids and glycerol. They are hydrophobic, meaning they do not mix with water and are an important part of cell membranes. Lipids also play a crucial role in storing energy, as they can be broken down and used as a source of energy when needed.

There are several different types of lipids, including triglycerides, phospholipids, and steroids. Each type has a different structure and function in the body. Triglycerides are the most common type of lipid and are used for energy storage. Phospholipids are a major component of cell membranes and help to regulate what can enter and exit the cell. Steroids, such as cholesterol, are important for maintaining the structure of cell membranes and are also used to produce hormones.

Your question seems to be formatted wrong. The correct format should be as follows:

Which of the following is not an important biological function of lipids?

insulation regulation of growth and development energy storage protection of internal organs and tissues all of these choices are functions of lipids.

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Warren is developing a model for tracking carbon atoms within an ecosystem and its environment. warren knows that plants perform both photosynthesis and cellular respiration. does the number of plants in the ecosystem change the effect of the ecosystem on carbon dioxide levels in the atmosphere?

a. no. photosynthesis and cellular respiration do not involve carbon dioxide.
b. no. in plants, photosynthesis adds as much carbon dioxide to the atmosphere as cellular respiration removes.
c. yes, because photosynthesis removes carbon dioxide from the atmosphere and stores the carbon in plant tissues.
d. yes, because photosynthesis releases more carbon dioxide into the atmosphere than cellular respiration removes.
e. yes, but only if large plants are included in the model, because algae and other small photosynthetic organisms do not take up carbon dioxide.

Answers

The correct answer is (C). Yes, because photosynthesis removes carbon dioxide from the atmosphere and stores the carbon in plant tissues.

The process by which green plants, algae, and some bacteria transform water, carbon dioxide, and sunlight into glucose (a type of sugar) and oxygen is known as photosynthesis. This essential organic cycle upholds life on the planet and assumes a significant part in Earth's environments. The pigments, basically chlorophylls found in chloroplasts of photosynthetic creatures, have been utilized by plants and others to pull energy from daylight during photosynthesis. This energy then turns carbon dioxide and water into glucose. This essential organic cycle upholds life on the planet and assumes a significant part in Earth's environments. The pigments, basically chlorophylls found in chloroplasts of photosynthetic creatures, have been utilized by plants and others to pull energy from daylight during photosynthesis. This energy then turns carbon dioxide and water into glucose.

The required chemical equation for the photosynthesis reaction is:

6 CO2 + sunlight  + 6 H2O  → C6H12O6 (glucose) + 6 O2

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After the supernova in a star’s life cycle, what else is formed in addition to a nebula?

red giant or protostar
neutron star or red giant
protostar or black hole
black hole or neutron star

Answers

Answer:

D. Black Holes and Neutron Stars

Explanation:

The core of a star can survive a supernova. It can become something diffrent.

How many chromatids does a human somatic cell contain after interphase and just prior to mitosis?.

Answers

Answer:

Explanation:

92

examine the table, if a mutation occurred in the indicated region, which areas would you expect the Pitx1 gene.” check all that apply

Answers

Mutation result in changes in the nucleotides sequence in genes, so a mutation of the Pitx1 gene will change the nucleotide sequence in the gene.

What is a mutation?

A mutation refers to a change that occurs in the sequence of nucleotides in DNA molecules.

Since gene are regions of a DNA molecule that codes for a protein or gene product, a mutation will affect the gene product.

Therefore, for the Pitx1 gene, a mutation will change the nucleotide sequence in the gene.

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what is true of a population

Answers

Answer: all members live at the same time all members live in the same area and all members are the same species

Explanation: trust

help with this question 20pts ​

help with this question 20pts

Answers

6 (A)=(x)sebaceous gland

help pleaseeeeeeee
i attached a image

help pleaseeeeeeeei attached a image

Answers

Answer:

I think it is the grasshopper.

Answer:

Based on the food chain, we cannot tell for sure

Explanation:

You can only identify omnivores with a food web. In food chains it only shows one source of food for each animal, so we wouldn't know if one of the animals eats both autotrophs and heterotrophs.

Which is the correct ratio for SINE?

Answers

Answer:

opposite/hypotenuse

Explanation:

SOHCAHTOA method, shows that sine is Opposite Hypotenuse.

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A two-day environmental clean up started at 9AM on the first day. The number of workers fluctuated as shown in the following figure.graph of number of workers vs. time; between t=0 hours and t=8 hours the graph behaves as a sine curve with centerline 30, amplitude 10 and period 16; between t=12 and t=20, the graph is constant at 20. Then, at t=20 the graph becomes a sine curve again, starting at its minimum and completing one period between t=20 and t=36. The graph is then constant at 20 until t=44, before increasing as a sine again until t=48.Suppose that the workers were paid 15 dollars per hour for work during the time period 9 am to 5 pm and were paid 22.5 dollars per hour for work during the rest of the day. What would the total personnel costs of the clean up have been under these conditions?total cost = dollars Will mark brainiest !! In your own words, what are the origins of the day of the dead? please explain in 3 to 5 sentences. A group of friends wants to go to the amusement park. They have no more than $505to spend on parking and admission. Parking is $15, and tickets cost $29 per person,including tax. Which inequality can be used to determine x, the maximum number ofpeople who can go to the amusement park?505 < 29(+ 15)505 < 15 + 292Submit Answer505 > 15 + 29x505 > 29(x + 15) convincing rivals not to enter a price war, protection from customer pressure to lower prices, and the ability to better withstand cost increases from suppliers characterize which type of competitive strategy? group of answer choices overall low-cost leadership strategy differentiation strategy focus strategy overall high-quality leadership strategy What is 51,255 divided by 300 as a decimal? Which expression is equivalent to startroot 8 x superscript 7 baseline y superscript 8 baseline endroot? assume x greater-than-or-equal-to 0. 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Real GDP rises, employment falls, and prices rise Real GDP rises, employment rises, and prices rise B Real GDP rises, employment rises, and prices fall Real GDP falls, employment falls, and prices fall A baby learns the meaning of words aslater uses in sentences.are spoken by others andtheir / theythey / themthey / themselvesoit / themo they / it What is a member of a large group of animals that have three body sections, six legs, cold blood and an external skeleton called? the neolithic revolution led to greater specialization in trades. why is this economically important? which of the following concepts was advanced by social psychologists to help explain why people who are part of a crowd sometimes commit aggressive, antisocial acts that they would not commit if they were alone? responses groupthink groupthink cognitive dissonance cognitive dissonance social facilitation social facilitation deindividuation deindividuation catharsis true or false? a responsive person with no evidence of spinal injury should be placed in the recovery position. Are (99 11 + 10g) - (12 - 119 + 13) and -3(-10g + 12) equivalent expressions? Explain. Seastrand Oil Company produces two grades of gasoline: regular and high octane. Both gasolines are produced by blending two types of crude oil. Although both types of crude oil contain the two important ingredients required to produce both gasolines, the percentage of important ingredients in each type of crude oil differs, as does the cost per gallon. The percentage of ingredients A and B in each type of crude oil and the cost per gallon are shown.Crude OilCostIngredient AIngredient B1$0.1020%60%2$0.1550%30%Each gallon of regular gasoline must contain at least 40% of ingredient A, whereas each gallon of high octane can contain at most 50% of ingredient B. Daily demand for regular and high-octane gasoline is 900,000 and 700,000 gallons, respectively. How many gallons of each type of crude oil should be used in the two gasolines to satisfy daily demand at a minimum cost? Round your answers to the nearest whole number. Round the answers for cost to the nearest dollar.gallons of crude 1 used to produce regular=fill in the blank 1gallons of crude 1 used to produce high-octane=fill in the blank 2gallons of crude 2 used to produce regular=fill in the blank 3gallons of crude 2 used to produce high-octane=fill in the blank 4Cost=$ fill in the blank 5 Bibco Corporation mustdetermine investment strategy for the firm during the next threeyears. Currently (time 0), $100,000 is available for investment.Investments A, B, C, D, and E are available. Th in 2012, an estimated ____ adolescents and adults met the criteria for a substance-use disorder at some time during the year. During a science experiment, your teacher does a demonstration. She takes asmall piece of rope, weighs it to find its starting weight, burns it, and thenweighs it again. The final mass of the product is different from the startingweight of the reactant.Why is the final mass different? 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