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PtichkaEL [24]
3 years ago
12

HELP ME SOMEONE PLSss

Biology
1 answer:
kenny6666 [7]3 years ago
3 0

Answer:

I think it's a or D I'm not sure

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To maintain homeostasis, unicellular organisms grow, respond to the environment, transform energy, and reproduce. A single-celled, or unicellular, organism does everything you would expect a living thing to do.

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An ecosystem is biotic, not abiotic.

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