Explanation:
The oldest fossil evidence of seed plants is of Late Devonian age, and they appear to have evolved out of an earlier group known as the progymnosperms. These early seed plants ranged from trees to small, rambling shrubs; like most early progymnosperms, they were woody plants with fern-like foliage.
Which is a natural factor that causes long-term climate change?
Earth’s position
pollen grains
fossils
ice cores
Answer:
the is Earth's position
Answer:
A. Earths positions
Explanation:
ummmmmmm it is
Drag each tile to the correct box.
Sort the types of energy according to the order in which they move through this system:
Water stored in dams falls freely with the force to make a turbine move. The turbine moves and produces electricity. This electric energy is
supplied to homes. At home, we use electricity for heating, cooling, and lighting.
Put these in order:
Electrical energy
Light energy
Potential energy
Kinetic energy
Answer:
Electrical energy > kinetic energy > light energy > potential energy
Explanation:
If illegal hunting of oxpeckers increases in 2012 and causes a decrease in oxpecker numbers, what will most likely happen to
rhinoceros populations?
a decline in oxpecker numbers is probably going to be bad for rhinoceros populations.
Oxpecker numbers are projected to decline as a result of increased unlawful hunting, which will have a negative impact on rhinoceros populations.
The ticks and parasites that live on the skin of rhinoceroses and other large mammals provide the food source for oxpeckers, which are birds. By keeping the animals free of parasites and warning them of imminent danger, they offer an important service.
The number of ticks and other parasites on rhinoceroses may increase if oxpecker populations drop as a result of hunting, which could result in health issues and lower survival rates. In addition, rhinoceroses might be more susceptible to predators and other dangers without oxpeckers to provide warning sounds. So, a decline in oxpecker numbers is probably going to be bad for rhinoceros populations.
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Tori created the following table to summarize the key features of the three types of magma. What correction needs to be made? Basaltic Rhyolitic Andesitic Silica (SiO2) content 45-55% 55-65% 65-75%
Gas Content Low Intermediate High Explosivity Low Intermediate High Gas Content should be reversed (“High” under Basaltic and “Low” under Andesitic)
Explosivity should be reversed (“High under Basaltic and “Low” under Andesitic)
Basaltic and Andesitic should be switched
Rhyolitic and Andesitic should be switched
Basalt is a fine-grained, dark-colored igneous rock made primarily of the minerals plagioclase and pyroxene.
What are Basalt?The most prevalent rock on the surface of the Earth is basalt. Specimens range from dark green to brown to black in hue. Basalt is primarily made up of olivine, pyroxene, and plagioclase and is rich in iron and magnesium.
The majority of specimens are glassy, compact, and finely grained. They may also contain olivine, augite, or plagioclase phenocrysts and be porphyritic.
Basalt may have a texture that is coarsely porous due to holes caused by gas bubbles.
Therefore, Basalt is a fine-grained, dark-colored igneous rock made primarily of the minerals plagioclase and pyroxene.
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Tori created the following table to summarize the key features of the three types of magma, and corrections need to be made as follows: Gas content should be reversed ("high" under basalt and "low" under andesitic).
What is the significance of the magma and gas contents?Different magmas have different gas contents, such as the basaltic magma, which has a high gas content that can result in explosive eruptions, and the andesitic magma, which has a low gas content and is less likely to cause explosive eruptions.
Hence, Tori created the following table to summarize the key features of the three types of magma, and corrections need to be made as follows: Gas content should be reversed ("high" under basalt and "low" under andesitic).
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1.How skin contributes to maintenance of homeostasis?
2.Types of skin cancers
3. Degrees of burns.
APA Format for in-text citations and list of references
1)The skin contributes to the maintenance of homeostasis by regulating body temperature, protecting against external factors, and playing a role in fluid balance.
2)Types of skin cancers include melanoma, basal cell carcinoma, and squamous cell carcinoma.
3)Degrees of burns are classified into three categories, which are first-degree burns, second-degree burns, and third-degree burns.
1)It also contains sensory receptors that detect touch, temperature, and pain, which help the body respond to changes in the environment.
2) Melanoma is the most dangerous type of skin cancer, and it can spread to other parts of the body. Basal cell carcinoma and squamous cell carcinoma are less dangerous but can still cause damage if left untreated.
3)A first-degree burn is a superficial burn that only affects the outer layer of skin. It causes redness, pain, and swelling but does not cause blistering. A second-degree burn affects the outer layer of skin and the layer beneath it. It causes redness, pain, swelling, and blistering. A third-degree burn affects all layers of the skin and can damage nerves, blood vessels, and muscles. It causes white or blackened skin and can be life-threatening.
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Part II- Dihybrid Crosses
Directions: Answer the following about dihybrid crosses. Be sure to show ALL your work.
1. Set up a Punnett square using the following information:
• Dominate allele for tall plants = D
●
Recessive allele for dwarf plants = d
Dominate allele for purple flowers = W
Recessive allele for white flowers = wi
●
●
●
Cross a homozygous dominate parent (DDWW) with a
homozygous recessive parent (ddww)
AL
D
The standard Mendelian ratio for a dihybrid cross, in which the alleles of two distinct genes assort independently into gametes, is 9:3:3:1.
Is AA or AA homozygous?The alleles in the pair, whether they are both dominant or both recessive, are the same, so the term "homozygous" is used to characterize the pairs "AA" and "aa." The allelic pair "Aa" is referred to as heterozygous, in contrast.
What else is meant by homozygous?In terms of genetics, being homozygous means that you have inherited the identical alleles of a particular genomic marker from both of your biological parents. As a result, a person who possesses two identical copies of a genetic marker is said to be homozygous.
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A cellular process is shown in three steps
Answer:
The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.
Explanation:
Source: Khanacademy
Brainliest, Please!although aerobic respiration yields more energy than anaerobic respiration, anaerobic respiration occurs in aerobic organism.why?
This is because anaerobic respiration gives cells a mechanism to maintain ATP synthesis even when oxygen is scarce or absent.
What is aerobic respiration?Cells use the process of aerobic respiration, which occurs in the presence of oxygen, to transform nutrients, generally glucose, into energy. It takes place in the majority of eukaryotic cells, including those of plants and animals, and is the most effective method of cellular respiration.
Anaerobic respiration may still take place in aerobic organisms even if aerobic respiration generates more energy than anaerobic respiration does.
A significant quantity of ATP is produced when glucose is fully oxidized during aerobic respiration to carbon dioxide and water. In contrast, anaerobic respiration entails the partial oxidation of glucose or other organic molecules without the presence of oxygen, creating ATP and other metabolic products like lactic acid or ethanol.
Certain bacteria and archaea, for example, are designed to survive in conditions with little or no oxygen, and they only use anaerobic respiration to generate energy.
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fill in the blank. In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of ________ between the individual cells of the tissue
In a tissue type that undergoes a relatively great deal of mechanical stress, like the tissue that lines the intestine, you would expect to see an abundance of desmosomes between the individual cells of the tissue.
Desmosomes are specialized and largely ordered membrane disciplines that intervene cell- cell contact and strong adhesion. tenacious relations at the desmosome are coupled to the intermediate hair cytoskeleton. Desmosomes are intercellular junctions that give strong adhesion between cells. Because they also link intracellularly to the intermediate hair cytoskeleton, they form the tenacious bonds in a network that gives mechanical strength to apkins. Desmosomes are a type of anchoring junction in beast apkins that connect conterminous cells. Anchoring junctions are button- suchlike spots set up each around cells that bind conterminous cells together. Desmosomes are common in epithelial apkins where they anchor keratin intermediate fibers to the membrane, but they're also set up in myocardial and Purkinje fibre cells of the heart.
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Help♂️| according to the data which of the following substances final volume is incorrect?
From the table that we have, the final volume of the sodium chloride is incorrect.
Why is the final volume of sodium chloride incorrect?When we look at the table, we would have to notice that the final volume ought to be less than the initial volume and the reason for this is that the liquid is being removed.
It is thus not possible to have a case where the final volume is grrater then the initial volume as we see is the case for the sodium chloride that have been shown here in the table attached.
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Explain what the acoustic measure H1-A3 is. Additionally discuss why a large value of the measure H1-A3 would reflect a breathy voice. (Hint: consider using these terms: vocal fold closure, spectral tilt).
The acoustic measure H1-A3 represents the difference in frequency between the first harmonic (H1) and the third formant (A3) in a speech signal.
The first harmonic is the lowest frequency component of the voice signal, while the third formant is a resonance frequency that is related to the shape and size of the vocal tract.
A large value of H1-A3 indicates that the third formant is higher in frequency than the first harmonic, which is a characteristic of breathy voice quality.
This is because breathy phonation is associated with incomplete vocal fold closure, which results in a weaker and more turbulent airflow through the vocal tract.
This causes a change in the spectral tilt, which in turn leads to an increase in the frequency of the third formant relative to the first harmonic, resulting in a larger H1-A3 value.
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Name 3 components of the original cell theory
Answer:
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
Answer:
All living organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.
also, u got your answer from a 14 yr old B)
Explanation:
Which of the following is not a natural change to the environment?
Drought
flood
Disease
ranching
Answer:
Your answer is Ranching.
Explanation:
Drought, flood and diseases are all natural changes to the environment.
(I NEED THIS ASAP PLEASE) How are the processes of meiosis I and meiosis II different?
A. Meiosis I results in two genetically unique haploid cells, while meiosis II results in four diploid cells that are genetically identical.
B. Meiosis I results in four genetically unique haploid cells, while meiosis II results in two diploid cells that are genetically identical.
C. During meiosis I, crossing over in prophase I allows for the random exchange of genetic material, while the process of meiosis II does not include crossing over.
D. During meiosis II, crossing over in prophase II allows for the random exchange of genetic material, while the process of meiosis I does not include crossing over.
In meiosis I, homologous chromosomes separate, while in meiosis II, sister chromatids separate. Meiosis II produces 4 haploid daughter cells, whereas meiosis I produces 2 diploid daughter cells. Genetic recombination (crossing over) only occurs in meiosis I. D
Answer:
A. Meiosis I results in two genetically unique haploid cells, while meiosis II results in four diploid cells that are genetically identical
Compare the distribution of mitochondria in the four organs, or organ parts, shown in the graph.
Answer:
More mitochondria present in the heart as compared to other organs.
Explanation:
The distribution of mitochondria is not the same throughout the body. The organ which perform more hard work in the body have more number of mitochondria in the cell because the organ needs more energy for performing its function. Heart is the organ in the body that performs more hard work so there are 5000 mitochondria present in each cell of the heart.
The organ that contains the highest amount of mitochondria is the heart.
Cells are the simplest units of the living organism which are organised in various amounts to form tissue.
These cells contain organelles that brings about the normal functioning of the cell.
An example of the organelle is mitochondria.
The mitochondria is the power house of the cell which is located in organs that requires a lot of energy.
Example of such organs are:
Heart,
Kidneys
Muscles
Brain.
The heart is known to have the highest mitochondria with about 5,000 mitochondria per cell.
Therefore to compare with the other organs, the heart contains the highest amount of mitochondria.
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Which term best represents process 2?
Choose 1 answer:
A) Precipitation
B) Evaporation
C) Transpiration
D) Condensation
( PLEASE HELP NOW ) !!!
Answer:
transpiration
Explanation:
khan
Salivary amylase is an enzyme found in the mouth. It breaks down starch into sugars. Why will salivary amylase NOT break down proteins?
Select one:
a.
Only sugars have the correct shape to activate the enzyme.
b.
Proteins will not fit into the active site of the amylase enzyme.
c.
Proteins do not have the proper active site for the enzyme to work on them.
d.
The enzyme is the wrong substrate for proteins.
Farmers apply insecticide onto their tomato crops to keep worms from eating the tomatoes growing on the plants. Is this example commensalism?
Yes, it is an example of commensalism
what is commensalism ?
Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed.
an association between two organisms in which one benefits and the other derives neither benefit nor harm.
Commensalism is a type of relationship between two organisms in which one benefits from the another without causing any harm to it.
1.Orchids Growing On Branches.
2.Sharks And Remora Fish.
3.Whales And Barnacles.
4.Tree frog on plants.
5.Burdock Seeds On Animals.
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1. Which of the following pairs of organisms has harmful interaction?
A Butterflies and flowers C. A bird's nest and a tree
B. Orchids and trunk of a tree
D. A snake and a rat
2. Which of the following can help conserve our ecosystem?
A. Protect the forests and bodies of water against harmful activities
B. Encourage the political leaders to build farm to market roads to
reach all beautiful places
C. Construct buildings near the river banks.
D. Improve the ecosystem by inviting tourists to visit your place.
3. In a community where there are predators and prey, one always
finds
A many more prey organisms than predators
B. many more predators than prey
C. equal number of predators and prey
D. many more animals than plants
4. One example of commensalism is when the plant like fern is attached
on a branch of a tree. Why is the interaction called commensalism?
A. They compete with each other.
B. Both a branch of a tree and a fem benefit from each other.
C. Only a branch of a tree is benefitted from the relationship.
D. A fern benefits from the relationship while a branch of a tree is
neither harmed nor benefitted.
5. Overpopulation affects the balance of nature. Which of the following is
not true about this statement?
A. More people will work, and the balance of nature could be
improved
B. It may result to death of some organisms.
C. More consumers may upset the balance of nature,
D. Overpopulation may result to fighting and struggle for survival,
Answer:
1. A snake and a rat
2. Protect the forests and bodies of water against harmful activities
3. Many more prey organisms than predators
4. A fern benefits from the relationship while a branch of a tree is neither harmed nor benefited
5. More people will work and the balance of nature could be improved
Explanation: hope this helped
Which of the following statements is FALSE?
The first electron shell of an atom is filled when it contains eight electrons.
The number of electrons in the outer shell of an atom determines the atom's chemical properties.
Ο Ο Ο Ο
An oxygen atom has six electrons in its valence (outer) shell; therefore, it is considered unstable
Inert atoms do not readily participate in chemical reactions
which of the following statements about milk is false? group of answer choices to break down and digest the lactose found in milk, humans need the enzyme lactase curdling of milk is dependent on the casein protein butter is made from milk with high levels of protein milk appears white due to the large fat globules and other large particles
false. Among the supplied possibilities, the erroneous statement is "butter is manufactured from milk with high quantities of protein." Butter is produced by churning cream, the high-fat component of milk.
Centrifugation or leaving the milk to stand to allow the cream to rise to the top separates the cream from the milk. The fat molecules in the cream coalesce and create butter during the churning process. The resultant butter has a low protein content since the majority of the protein is located in the liquid component of milk, known as skim milk. All of the following statements are correct: Humans require the enzyme lactase to break down and digest the lactose contained in milk. The curdling of milk is determined by Casein is a protein. Because of the huge fat globules and other large particles in milk, it appears white. It's also worth mentioning that milk may originate from a variety of animals, including goats, sheep, camels, and even water buffalo. Milk's nutritional content and characteristics differ based on the species from which it was obtained.
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Which of these animals would you NOT find in the Amazon River in South America
Answer:
you didn’t list the animals
Explanation:
pls give brainliest
What is the purpose of natural selection?
Answer:
The purpose of natural selection is not a conscious or intentional one, as it is not driven by a specific goal or purpose. Instead, natural selection is a fundamental process in biology that acts on heritable traits within populations over generations. It is a key mechanism of evolution.
Explanation:
The primary outcome of natural selection is the adaptation of organisms to their environment. Individuals with traits that are advantageous in a particular environment are more likely to survive, reproduce, and pass on those beneficial traits to their offspring. Conversely, individuals with traits that are disadvantageous are less likely to survive and reproduce, leading to a reduction in the frequency of those traits in the population over time.
Natural selection, therefore, acts as a filter that shapes the characteristics of populations, favoring traits that enhance an organism's survival and reproductive success in a given environment. Over many generations, this process can lead to the development of new species or the modification of existing ones, as populations accumulate adaptations that allow them to thrive in different ecological niches.
It's important to note that natural selection does not have an end goal in mind, nor does it necessarily lead to the "best" or most advanced organisms. Instead, it is a consequence of the interactions between organisms and their environment, constantly shaping and refining the traits of living beings based on their ability to survive and reproduce.
Which statement is true about nitrogen gas in the atmosphere?
It is easily absorbed and used by plants and animals.
It's taken in by plants as part of their metabolism.
It's unusable by most forms of life on earth.
It's present in only trace amounts.
The statement that is true about nitrogen gas in the atmosphere is that it is unusable by most forms of life on Earth. Nitrogen gas (\(N_2\)) makes up approximately 78% of Earth's atmosphere, and while it is abundant, it is not directly accessible to most organisms.
Nitrogen gas is composed of two nitrogen atoms held together by a strong triple bond. This bond is difficult to break, and most forms of life lack the necessary enzymes to convert nitrogen gas into a usable form. This inability to directly utilize nitrogen gas is true for both plants and animals.
However, while nitrogen gas is not directly usable, it is a crucial element for life. Nitrogen is an essential component of proteins, nucleic acids (DNA and RNA), and other vital molecules. In order to obtain the necessary nitrogen for growth and development, living organisms rely on the nitrogen cycle.
In the nitrogen cycle, nitrogen gas is converted into biologically usable forms through a process called nitrogen fixation. Nitrogen-fixing bacteria, found in soil and root nodules of certain plants, have the ability to convert nitrogen gas into ammonia (\(NH_3\)) or nitrate (\(NO^3^-\)). These forms of nitrogen can then be taken up by plants as part of their metabolism.
Once incorporated into plants, nitrogen can be passed on to animals through the consumption of plant material. Animals obtain nitrogen by consuming plants or other animals that have already assimilated nitrogen into their tissues.
In conclusion, nitrogen gas in the atmosphere is unusable by most forms of life on Earth. It requires conversion into biologically usable forms through nitrogen fixation by bacteria, and then it can be taken up by plants as part of their metabolism. This indirectly allows nitrogen to enter the food chain and be utilized by animals.
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the fall season is approaching. you notice squirrels are very active in your yard. why is this so? A, they are playing games because the weather is cooler
B, they are burying a supply of nut for the winter.
C they are looking for the nut supply they buried to help them survive the fall.
D they are digging for scrubs and worms to add to their diet.
please help me
Answer: B. they are burying a supple of nut for the winter
hope this helps!
Hydrophilic substances "dissolve" in water, what does that mean?
How does it pull apart bonds like in glucose?
What about the lipid bilayer with the phospholipid hydrophilic head, why doesn't it get ripped off the tails?
Answer:
mark me pls
Explanation:
Q1)When a substance is said to “dissolve” in water, it means that it is able to mix with the water molecules and form a homogeneous solution. This means that the substance is evenly distributed throughout the water and is no longer visible as a separate entity. Hydrophilic substances are able to dissolve in water because they have a strong affinity for water molecules, allowing them to form strong hydrogen bonds with them.
Q3)The hydrophilic head of the phospholipid is held in place by a combination of electrostatic and hydrogen bonding interactions with the hydrophobic tails. These interactions are strong enough to keep the head and tail together, even when the bilayer is subjected to mechanical forces.
the role of you to make good society
By being a good human being, following moral values we can build a good society.
Economy is growing, GDP is flawed. Wars an Natural disasters are good for GDP. Aristotle in order to make good society, he said, the society must create the pre-conditions. For him the good society was the one that created the conditions for what he calls "Eudaimonia", which means flourishing or thriving.
First are the basic needs of humans that is Food, Shelter, Water and Secondly the amenities for building a successful and good lifestyle and better life.
Moreover, every individual should have freedom to speech, fundamental rights, an attitude of gratitude as well. A person should be a giver, a giver to needy ones, giver of happiness that is spreading happiness, rather than negativity.
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Which Monomers combine to form portion of haemoglobin in red blood cells
The monomers that combine to form portion of haemoglobin in red blood cells are called the two alpha monomers and the two beta monomers.
What is haemoglobin?Haemoglobin is defined as the protein part of the red blood cells that helps in the transport of oxygen and removal of carbondioxide from the cells.
The major components of the haemoglobin include the following:
The protein component and The iron complex of a porphyrin derivative.The protein aspect.of the haemoglobin is then made up of the monomers that combine to form portion of haemoglobin in red blood cells are called the two alpha monomers and the two beta monomers.
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In ascocarp the structure is not found?
1.chlamydospore
2.ascus
3.paraphyses
4.hyphae
Answer:
hyphae
Explanation:
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The structure that is not found in ascocarp is Chlamydospore. Therefore, the correct option is A.
Chlamydospores, which have thick walls and are commonly seen in various fungi, are resting spores. however, they are often not related to the ascocarp structure. The fruiting bodies formed by members of the fungal phylum Ascomycota are known as ascocarps. Asci (plural: ascus), sac-like structures that contain the sexual spores known as ascospores, which differentiate them.
Ascocarps may have paraphysis, sterile filaments that have a variety of uses, including support and aid in spore dispersal. The body of the fungus is made up of branching filaments called hyphae, which are present in all stages of the life cycle.
Therefore, the correct option is A.
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Describe how the components of a meal containing fried fish and toast bread will be processed as they move through the digestive system of man
Answer:
Explanation:
When a meal containing fried fish and toast bread is consumed, it goes through a series of processes in the digestive system of a human. Here's a general description of how the components are processed:
1. Mouth: The process of digestion begins in the mouth. Chewing breaks down the toast bread and fish into smaller pieces, while saliva mixes with the food to start the breakdown of carbohydrates.
2. Esophagus: The chewed food, now called a bolus, is swallowed and travels down the esophagus through peristaltic contractions. The esophagus carries the food to the stomach.
3. Stomach: The stomach is responsible for further mechanical and chemical digestion. It mixes the food with stomach acid and digestive enzymes to break down proteins. The fried fish is broken down into smaller pieces through mechanical churning.
4. Small Intestine: The partially digested food leaves the stomach and enters the small intestine. Here, bile from the liver and enzymes from the pancreas break down fats, while other enzymes continue the breakdown of proteins and carbohydrates. Nutrient absorption occurs through the walls of the small intestine and is facilitated by small finger-like projections called villi.
5. Large Intestine: Any remaining undigested food, as well as water and electrolytes, pass into the large intestine. The large intestine absorbs water and electrolytes while forming waste material known as feces.
6. Rectum and Anus: The feces are stored in the rectum until elimination through the anus occurs during a bowel movement.
Throughout this process, various digestive enzymes and gastric juices are secreted at different stages to facilitate the breakdown and absorption of nutrients. The fried fish and toast bread are broken down into smaller molecules, such as proteins, carbohydrates, and fats, which are then absorbed into the bloodstream to provide energy and nourishment for the body.