What is an advantage of using coal, oil, and natural gas (fossil fuels)?
1- they have toxic by products
2- the amount is limited
3- they produce air pollution
4- they are versatile
Answers
Answer:
4
Explanation:
Products made from fossil fuels are versatile
Fossil fuels can be made into many types of energy. Coal can be used to create electricity. Oil is used to create combusting products like gasoline for transportation and heating. Natural gas is often used for heating and combustion energy as well.
Related Questions
How does the shape of an enzyme affect the reaction
Answers
Answer:
The shape of the enzyme determines which chemical reaction it will speed up.May strain the bonds of the substrate or put chemical groups of the active site in the correct position to speed up the reaction.
do transported soil have different types of grain particles?
Answers
Answer:
Probably Yes
Explanation:
It's being moved so the other particles are most likely being lost so i would say, yes
How does the environment recycle nutrients
Answers
A student peeled the skins from grapes, exposing cells with membranes that are only permeable to water and small diffusible solutes. The student measured the mass of the peeled grapes. The student then placed each peeled grape into one of five solutions. After 24 hours, the student removed the peeled grapes from the solutions, measured their final mass, and calculated the percent change in mass (Table 1).
TABLE 1. PERCENT CHANGE IN MASS OF PEELED GRAPES IN SOLUTIONS
Based on Table 1, which of the following best explains the difference in water potential between certain solutions and the grapes?
A. NaCl and tap water have a lower water potential because these two solutions caused the grape to gain water.
B. Grape soda and NaCl have a lower water potential because these two solutions caused the grape to lose water.
C. Tap water and grape juice have a lower water potential because these two solutions caused the grape to lose water.
D. Grape soda and grape juice have a lower water potential because these two solutions caused the grape to gain water.
Answers
The observation is that; Tap water and grape juice have a lower water potential because these two solutions caused the grape to lose water. Option C
What is solute potential?We have to note that a solution can be composed of a solute and a solvent. The solvent is the liquid while the solute is the solid or that gas that is to be dissolved. In most of the cases, the solvent is water and this is especially so when we have a biological system.
When we say that a system is semi permeable, the implication of that is that the system can allow some substances to pass through but it would not allow some of the substances to pass through.
In the case of the susbtnace thay we havehere. We can see that the more concentrated the grape juice is, the more the solute lost water and the mass of the solute was found to have decreased.
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How did kettlewell determine if moths lived longer than others?.
Answers
Answer:
He placed light and dark moths on tree trunks where he could observe them and then he recorded the times a bird found the moth.
Explanation:
How did Kettlewell determine if moths lived longer than others? By monitoring the amount of dark and light-colored moths on the light and dark trees and seeing how many were caught by birds
Kettlewell determines if moths lived longer than others through the fact that it considerably analyzes the amount of dark and light-colored moths on the light and dark trees and observes the number of many that were caught by birds.
How did Dr. Kettlewell determine the fact?Dr. Kettlewell test his hypothesis of the evolutionary mechanism of industrial melanism, he directly studied bird predation on moths. Kettlewell placed light and dark moths on the trunks of trees from where they can be observed. Then the number of times a bird found the moth on the tree trunk was calculated.
According to the question, he recorded the times a bird found the moth. He found that on dark tree trunks, birds were twice as likely to eat a light moth as a dark moth. The same birds would find the dark moth twice as often if the bark on the tree was light.
This supported the idea that dark moths had a survival advantage in a dark forest. He placed light and dark moths on tree trunks where he could observe them and then he recorded the times a bird found the moth at a given place.
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How do the light-dependent reactions and light-independent reactions work together?
Answers
Answer:
In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. ... In addition, several enzymes of the light-independent reactions are activated by light.
What instrument can be used to demonstrate that Earth is rotating?
Answers
Answer:Foucault pendulum
Explanation:
The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault and conceived as an experiment to demonstrate the Earth's rotation.
domestication of plants and animals is a defining characteristic of which agricultural revolution?
Answers
The domestication of plants and animals is a defining characteristic of the Neolithic Agricultural Revolution, also known as the First Agricultural Revolution.
This period marked a significant transition in human history when societies shifted from a hunter-gatherer lifestyle to a settled agricultural lifestyle. It is often considered the beginning of agriculture and the foundation for the development of human civilization.During the Neolithic Agricultural Revolution, early humans began to selectively cultivate and breed plants for desirable traits, such as larger grains or easier harvest.They also domesticated animals, such as goats, sheep, and cattle, for food, labor, and other resources. These practices allowed humans to establish permanent settlements, form more complex societies, and develop a more reliable and abundant food supply.
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In guinea pigs, white coat color is determined by the allele W. Black coat color is controlled by the allele w. Cross a white & black spotted pig with a black pig.
W = white
w = black
What percentage of the offspring will be black?
Answers
Answer:
About 75%
Explanation:
About 75% will have two ww alleles, while the rest will have Ww alleles.
In a newspaper editorial, a writer states that research on human embryonic stem cells is valuable and worthwhile. Which describes the most common argument against the writer's statement?A.In a scientific argument, some physicians argue that stem cells are not likely to be part of any beneficial application or medical treatment.B.In an economic argument, some experts argue that the benefits of stem cells are not worth the high cost of developing and implementing the research.C.In a scientific argument, some researchers argue that the goals of stem cell research would be easier to achieve by other means.D.In an ethical argument, some people argue that human embryonic cells should be protected.E.In a philosophical argument, some people argue that stem cell therapy would change the personality or identity of the person receiving it.
Answers
In my experience the answer would be:
"In an ethical argument, some people argue that human embryonic cells should be protected."
Because as with abortion, the general idea is that stem cells or embryos have life and must be protected. Therefore, there are many people against stem cell therapies. However, in the scientific community, stem cells are not considered conscious organisms.
how can a point mutation impact and organism
Answers
Answer:
it can be a hard like thing to get it from each
A bacteria culture starts with 2000 bacteria. [6 marks total] a) After 6 hours the estimated count is 60 000. How long does it take for the number of bacteria to double? Round your answer to 2 decimal places of an hour. [3 marks] b) Assume the doubling period was half an hour. How long will it take the bacteria population to grow to 90000? Round your answer to 2 decimal places of an hour.
Answers
Given a bacteria culture starts with 2000 bacteria. a) It take 2.93 hours for the number of bacteria to double ; b) It will take 4.21 hours. for the bacteria population to grow to 90000.
a) After 6 hours the estimated count is 60 000. Round your answer to 2 decimal places of an hour. For calculating the time taken for a number of bacteria to double, we use the formula, t = (ln 2)/k where, t = time, k = doubling time (in hours), and ln = natural logarithm. Given that the initial number of bacteria is 2000 and the number of bacteria after 6 hours is 60 000. The estimated growth rate, k = (ln N₁ - ln N₀ )/(t₁ - t₀ ) where N₁ is the final number of bacteria, N₀ is the initial number of bacteria, t₁ is the final time, and t₀ is the initial time. So, we have k = (ln 60 000 - ln 2000)/(6 - 0) = 1.418 / 6 hours = 0.236. Therefore, t = (ln 2)/k = (ln 2)/0.236 = 2.93 hours (approximately) to double the number of bacteria. Hence, the answer is 2.93 hours.
b) Assume the doubling period was half an hour. Round your answer to 2 decimal places of an hour. Given that the doubling period was half an hour. Therefore, the growth rate, k = 1/doubling time = 1/0.5 = 2 per hour. Let t be the number of hours to grow to 90,000 bacteria. Then, we have 90,000/2000 = 2^(t/0.5) => 45 = 2^(t/0.5) => ln 45 = (t/0.5) ln 2 => t = (ln 45)/(0.5 ln 2) = 4.21 hours (approximately). Therefore, the answer is 4.21 hours.
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(08.05 mc) an endangered species of lake trout is discovered living in a national wildlife refuge. which of the following statements explain how being listed as endangered under the endangered species act could help save the fish from extinction? the endangered species act calls for relocation of the trout to captive tanks for studying. the endangered species act prohibits fishers from catching the trout or interfering with its habitat. the endangered species act allocates federal funds to help add predatorial fish to the refuge to help promote only the survival of the heartiest trout.
Answers
endangered species act save the fish from extinction through relocation of the trout to captive tanks, prohibits fishers from catching the trout and allocates federal funds
The Endangered Species Act of 1973 (ESA; P.L. 93-205, 87 Stat. 884, 16 U.S.C. 1531–1544) was created to protect species that have been designated as vulnerable or endangered. Specifically, the ESA was created to To meet the goals of the treaties and conventions outlined in paragraph (a) of this section, it is necessary to offer a means for the ecosystems that are needed for the conservation of endangered and threatened species, as well as a program for their preservation.
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Goal
Investigate the optimal amount of foliage for the red, short furred slinquettes' population.
My Hypothesis
If I change the foliage so it increases, then the final number of slinquettes with red, short fur will increase.
My Analysis
Now that you have collected and analyzed your data, you will write an argument that explains how your experiment answers your question. There are three parts: claim, evidence, and reasoning.
hide data
My Evidence
Trial # Fur Color Mutation Fur Length Mutation Foliage Temperature Final Number of Slinquettes Red, Long Fur Final Number of Slinquettes Red, Short Fur Final Number of Slinquettes Green, Long Fur Final Number of Slinquettes Green, Short Fur
1
lots mild
not present
0
endangered
1
not present
0
not present
0
3
lots mild
not present
0
endangered
1
not present
0
not present
0
4
lots mild
not present
0
endangered
1
not present
0
not present
0
5
lots mild
not present
0
endangered
1
not present
0
not present
0
6
some mild
not present
0
surviving
6
not present
0
not present
0
7
lots mild
not present
0
endangered
1
not present
0
not present
0
8
some mild
not present
0
surviving
6
not present
0
not present
0
Claim
Write a sentence that states what you found out about the scientific question you just investigated. Provide enough detail so that a friend who did not do the experiment could learn from your description.
Evidence
Provide and describe scientific evidence from your data table that supports your written claim. Remember to provide enough detail so that a friend who did not do the experiment could learn from your description.
Reasoning
Explain why your evidence (what you wrote in Box 2) supports your claim (what you wrote in Box 1). Also, explain the scientific principles behind your reasoning. Remember to provide enough detail so that a friend who did not do the experiment could learn from your description
Answers
Answer:
Claim: Increasing the amount of foliage does not lead to an increase in the final number of slinquettes with red, short fur.
Evidence: The data table shows the results of eight trials where the amount of foliage was manipulated. In all trials, regardless of the amount of foliage (whether "lots" or "some"), the final number of slinquettes with red, short fur remained at 0. There were no instances where increasing the foliage resulted in an increase in the population of slinquettes with red, short fur.
Reasoning: The evidence from the data table supports the claim that increasing the amount of foliage does not lead to an increase in the final number of slinquettes with red, short fur. This suggests that the presence or absence of foliage does not have a significant impact on the population of slinquettes with red, short fur.
Based on the provided data, it is reasonable to infer that factors other than foliage, such as temperature, fur color mutation, and fur length mutation, may have a stronger influence on the population dynamics of slinquettes. These factors could be responsible for the observed patterns in the data.
It's important to note that the reasoning provided here is based solely on the given data and analysis. In a real scientific investigation, additional factors, experimental controls, and statistical analysis would be required to draw definitive conclusions.
From Marx's perspective, one of the ways that factory owners (the bourgeoisie) would control their workers (the proletariat) was through religion. This was done by _____. a) teaching the workers that they would reap their rewards in the afterlife. Ob) locking them in church unless they were on the assembly line. keeping them so busy with church activities they didn't have time to form a rebellion d) teaching them that they were entirely worthy of earthly pleasures.
Answers
The other options are not accurate representations of Marx's view on religion and its role in the oppression of the proletariat. option (a) is the correct answer.
From Marx's perspective, one of the ways that factory owners (the bourgeoisie) would control their workers (the proletariat) was by teaching them that they would reap their rewards in the afterlife. This was accomplished through the use of religion as an ideological tool to justify the existing social and economic order. By promoting the idea of a better life after death, the bourgeoisie were able to pacify the workers and prevent them from challenging the status quo. Additionally, religion could be used to promote a sense of submission and resignation among the workers, encouraging them to accept their lot in life and avoid taking action to improve their situation.
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Bile juice is released by the-
(A)Salivary glands
(B)Pancreas
(C)Liver
(D)Large intestine
Answers
Answer:
ayyyyyyyyyyyyyyyyyyyyyyyyyy sike its d no sike its a no sike its c no sick get a dDDDD
Explanation:
The bile juice is secreted in the Liver
which of the following problems during dna replication is being illustrated with the kids in the video? which of the following problems during dna replication is being illustrated with the kids in the video? dna replication is a very random process, and many mistakes are made. within a chromosome, there is more telomerase than there is dna. dna replication only occurs in cancer cells. nucleotides at the ends of the dna strands
Answers
The problem during DNA replication that is being illustrated with the kids in the video is nucleotides at the ends of the DNA strands.
Thus, the correct answer is nucleotides at the ends of the DNA strands (D).
What is DNA replication?DNA replication is the process of creating identical DNA molecules from an original DNA molecule. It is necessary for the growth and development of organisms, as well as for the reproduction of genetic information from one generation to the next. DNA replication occurs in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells.
The problem that is being illustrated with the kids in the video is "nucleotides at the ends of the DNA strands." DNA replication is a very random process, and many errors occur. In the video, the children played the roles of nucleotides, and they were supposed to link up to form a DNA strand.
However, when they reached the end of the strand, they had no one to link up with, causing the replication process to halt. This is similar to the problem that occurs when the nucleotides at the ends of the DNA strands are not replicated properly.
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Xavier is describing the role of electron carriers, such as NADP* in photosynthesis Which property of NADP should Xavier cite? A the chemical bonds formed by electrons in its molecular structure B. its ability to accept and release high-energy electrons and a hydrogen ion OC its reactivity with oxygen, water, and carbon dioxide D. its ability to emit a stream of electrons in a nuclear reaction
Answers
Answer:
B. its ability to accept and release high-energy electrons and a hydrogen ion
Explanation:
6. bears were once present as far south as california. over time they have disappeared
in most of the lower 48 states. how might the influx of humans have influenced bear
populations?
Answers
Bears were once present as far south as California. Over time they have disappeared in most of the lower 48 states.
Human have influenced bear populations as they are a factor of resource competition for the bear species, due to the fact that the resource available in the environment have value to both humans and bears. Major changes in disturbance cycles and landscape mosaics brought by humans have further affected temporal and spatial pulses of bear food production. Air pollution has also affected bear food biomass on a small scale and is likely to have major future impacts on bear habitat climatic warming.
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Salt in soil may affect plant growth. Independent variable: ?
Dependent variable: ?
Hypothesis: If ____ Then ____ Because.
Answers
Answer:
Dependent variable because it is a possible result of what isn't changed
Synaptic communication between two neurons usually occurs via a. electrical signaling b molecular transduction c. chemical messengers d direct contadct
Answers
Chemical mediators is the right response (c). Neurotransmitters, which are chemical messengers, are released into the synaptic cleft during synaptic contact between two neurons.
These neurotransmitters then attach to receptors on the postsynaptic neuron, which may cause the postsynaptic neuron to produce an electrical signal. This process is essential for many fundamental physiological functions, such as movement, perception, and cognition, as well as for information transfer between neurons in the nervous system. Direct interaction between neurons and electrical signalling are both possible, but chemical signalling via neurotransmitters is more frequent. A chemical signal, like a neurotransmitter, is converted into a cellular reaction through a process known as molecular transduction.
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what moon phase causes the highest tides
Answers
Answer:
new moon and fullmoon
Explanation:
Answer:
full
Explanation:
A student wanted to determine what concentration low, medium, or high of a chemical released from brown algae prevented coral larvae from settling and growing on the algae. Each concentration level of the chemical from one brown alga was added to the water Percent of Larvae Settled of each tank. Tank size, water temperature, and algae species were held constant. A different number and species of larvae were dropped into each tank. After three days, the percent of settled larvae for each concentration of inhibiting chemical was found.
1. Evaluate What are the design flaws in this experiment?How would you change the experiment to make the results more valid?
2. Analyze The student concluded that at all levels the inhibiting chemical affected the rate of settlement of marine larvae. Is this an accurate conclusion based on the data collected? Explain.
Answers
The described experiment contains a number of design issues. The key problems are a lack of a control group, a small sample size, limited replication, and lack of randomization in 0ther words, the experiment should include a control group, be replicated, have the assignment be random, and have a larger sample size to ensure the results are more reliable.
The flaws in the experiment and the analysisThe experiment described has several design flaws that impact the validity of the results. The major flaws include the absence of a control group, limited sample size and replication, lack of information about the inhibiting chemical, and no randomization. To improve the validity of the results, the experiment should include a control group, increase the sample size and replication, randomize the assignment of larvae, provide information about the chemical, and follow standardized protocols.
Based on the information provided, it is not possible to accurately conclude whether the inhibiting chemical affected the settlement rate of marine larvae at all concentration levels. Without a control group and proper statistical analysis, it is difficult to determine the specific impact of the inhibiting chemical.
A comparison between the settlement rates observed in the presence of the inhibiting chemical and those in the control group, along with appropriate statistical tests, is necessary to make an accurate conclusion. Further analysis, such as effect sizes and confidence intervals, would provide a more comprehensive understanding of the relationship between the inhibiting chemical and larval settlement rates.
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The stringy, non-digestible carbohydrate found in whole grains, vegetables, and fruits is called ______
Answers
The stringy, non-digestible carbohydrate found in whole grains, vegetables, and fruits is called fiber.
Fiber refers to the indigestible portion of plant-based foods. Unlike other food components such as fats, proteins, or carbohydrates, it does not get broken down by digestive enzymes. Instead, it passes relatively intact through your digestive system and eventually out of your body.Fiber is divided into two types: soluble and insoluble. Soluble fiber can be dissolved in water and forms a gel-like substance in your gut. It helps slow digestion and nutrient absorption. Insoluble fiber, on the other hand, doesn't dissolve in water, which helps to move waste through your intestines.
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How much can one single bacterium reproduce on a nutrient source at room temperature in 10 hours?:
[A] 15 Thousand bacteria
[B] 1 Million bacteria
[C] 30 Million bacteria
[D] 60 Million bacteria
I might need a direct answer because sometimes I don't get explanations lol.
Answers
One single bacterium can reproduce 15 Thousand bacteria on a nutrient source at room temperature in 10 hours.
So, option A is correct.
What is bacteria?Bacteria can be described as ubiquitous, mostly free-living organisms often consisting of one biological cell that constitute a large domain of prokaryotic microorganisms.
There are some major characteristics found in bacteria which include;
1) lack of membrane-bound organelles,
2) unicellular and
3) small (usually microscopic) size
Bacteria in the human body serves some functions as they help to degrade the food we eat, help make nutrients available to us and neutralize toxins.
In conclusion, Bacteria are microscopic single-celled organisms that can be helpful to organisms.
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2. what are mountains that form along fault lines called
Answers
I think the answer you may be looking for is fault-block mountains. They are created when faults or cracks in the Earth’s crust force materials upward. So instead of folding, like the plate collision we get with fold mountains, block mountains break up into chunks and move up or down. Fault-block mountains usually have a steep front side and then a sloping back side :)
which of the following statements about evolution and ecology is true? evolutionary processes and ecological processes can occur on similar time scales. evolution by natural selection is generally not mediated by ecological phenomena (such as predation).
Answers
Evolutionary processes and ecological processes can occur on similar time scales, and evolution by natural selection is often mediated by ecological phenomena, such as predation. Here option A is the correct answer.
Evolution and ecology are related fields of biology that are interconnected and affect each other. Evolutionary processes involve changes in the genetic makeup of populations over time, while ecological processes involve interactions between organisms and their environment.
These two processes can occur on similar time scales, as evolutionary changes can lead to ecological changes and vice versa. Furthermore, evolution by natural selection is often mediated by ecological phenomena, such as predation.
Natural selection is the process by which organisms with traits that are advantageous for survival and reproduction are more likely to survive and pass on their traits to the next generation. Ecological factors, such as predation, can select certain traits that confer survival advantages, such as speed, camouflage, or toxicity.
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Complete question:
Which of the following statements about evolution and ecology is true?
A - evolutionary processes and ecological processes can occur on similar time scales.
B - evolution by natural selection is generally not mediated by ecological phenomena (such as predation).
a pediatrician sees a patient who is exhibiting symptoms of gigantism and rapid growth. which of these endocrine glands is likely affected in this individual? the thyroid gland the adrenal gland the posterior pituitary gland the parathyroid gland the anterior pituitary gland
Answers
A pediatrician sees a patient who exhibits symptoms of gigantism and rapid growth. The anterior pituitary gland is probably affected in this individual. So the correct option is (e).
Pituitary adenoma or tumor is almost always the main cause of gigantism, a dangerous disorder. Patients with high exposure to growth hormone as children experience gigantism. Pituitary tumor cells secrete too much growth hormone (GH), causing numerous physiological abnormalities.
Normal GH production by the pituitary gland is disrupted by tumors, causing gigantism. Your pituitary gland is a small pea-sized endocrine gland located below your hypothalamus at the base of your brain. Among the eight key hormones that your pituitary gland secretes is GH..
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Which government agency worked with the US Army to get samples of the penicillin mold
Answers
Answer:
The us department of agriculture
Explanation:
large air tubes leading from the trachea to the lungs which convey air to and from the lungs; consist of primary, secondary or tertiary and right and left bronchioles
Answers
Answer:
Explanation:
Further down, the trachea divides into two tubes (left and right) called bronchi (BRAHN-kye). The bronchi connect the trachea to the lungs.