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dexar [7]
4 years ago
7

For the last 100 years, humans primary energy source has been ________.

Biology
1 answer:
Debora [2.8K]4 years ago
8 0
Hey there,
The answer is fossil fuels.

Hope this helps :))

~Top
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An organism that uses organic carbon for its carbon needs and sunlight for its energy needs would be called a __ quizlet
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Autotroph

An organism that uses organic carbon for its carbon needs and sunlight for its energy needs would be called an autotroph.

<h3>What are autotrophs?</h3>

An organism that has the ability to make its own food from inorganic materials is known as an autotroph. Contrarily, heterotrophs are organisms that are dependent on the eating of other species for their survival because they are unable to manufacture their own nutrients. Because they frequently provide food for heterotrophs, autotrophs are crucial producers in the ecosystem.

The most prevalent kinds of autotrophs are plants, which make their own food through the process of photosynthesis. In order to create nutrition from light, plants contain a specialized organelle called a chloroplast within their cells. These organelles generate glucose, a basic sugar needed for energy, as well as oxygen as a byproduct when combined with water and carbon dioxide. In addition to providing nutrients for the producing plant, glucose also serves as an energy source for the plants' consumers. Algae, plankton, and some varieties of bacteria are additional examples of autotrophs that engage in photosynthesis.

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What is difference between nervous and chemical(endocrine) system???
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Endocrine system uses chemical signaling (hormones produced by glands) while the nervous system uses electrical signaling (neural impulses).

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Nitrogen is a critical component of what organic compounds?
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chlorophyll

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The probability of having a <em>dd</em> child with Sickle-cell disease is 1/4. Each time they have children the gamete combination is random, so the genotype of the second child is independent from the genotype of the first child.

According to rules of probability, if two events are independent from each other, the probability of both happening is calculated by multiplying the individual probabilities of each.

Therefore the probability of having the first two children with the disease is 1/4 x 1/4 = 1/16.

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In assessing whether fluoridated water can cause cancer, what do the National Research Council, National Health Service, and Cen
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