The answer is oxygen
hope it helps!
<span>one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.</span>
Answer:
A and E are the correct.
Explanation:
Examples of the structures that determine function:
a) <u>Chloroplasts </u>only found in plant cells. They work to fix the CO2 in the presence of <u>light energy</u> (sunlight) and convert the reactants into <u>sugar molecules (carbohydrates</u>) that can be used by cells for metabolic functioning.
e) <u>Sperm</u> is the male reproductive cell. Motile sperm cells have a tail-like structure that typically <u>move via flagella</u> and requires a water medium in order to swim toward the egg <u>for fertilization</u>.
Other options are not correct because <u>they don't explain their function according to their structure</u>.
Because all those energy sources are natural and will always be there, when ever there is a need for extra energy.
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