It is respiration because all living things do it and have to do it because they have to make energy to survive. After all, respiring is just a reaction that makes energy to go into cells, doesn't matter if it's a plant or jellyfish or whatever.
The correct answer is D. Precambrian Time - Paleozoic Era - Mesozoic Era - Cenozoic Era. This is the correct order of the geologic time scale, from oldest to most recent. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Answer:
the transfer of genetic material from one population to another
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It explains what the consumers do for the survival of the producers
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The answer is A:<span> Metamorphic rocks</span><span> may display two different grain sizes.</span> :)