<span>c. co2 and h2o are converted to carbohydrates
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The answer is B. Paleozoic
This era was the first era where insects, amphibians, and reptiles roamed the Earth.
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A, because plant cells do have membrane-bound nuclei. they have chloroplasts, so that isn't it. Plants don't use oxygen for photosynthesis, but carbon dioxide. The plant walls are made up of cellulose,, not lipids. It must be A.
Answer:
D
Explanation:
the only arrow that points out of the atmosphere is D
<span>Specialized cells protect the human body from disease-causing microbes by producing chemicals that destroy the microbes. </span>
