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solniwko [45]
3 years ago
8

Purines and pyrimidines are

Biology
1 answer:
il63 [147K]3 years ago
7 0

Answer:

answer to the question is B

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And as well as if there are only producers and no herbivores or carnivores then producers grow on continuously and there will not be the utilization of it. so there can't be a food chain without herbivores or carnivores.

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