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Scorpion4ik [409]
2 years ago
6

What gas contributes to 78% of earth's modern atmosphere?

Biology
1 answer:
Keith_Richards [23]2 years ago
4 0
(b) Nitrogen while oxygen contributes to 21% and 1% is the other gases
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A food chain contains oak trees (producer), mice (herbivore), black rat snakes (carnivore), and bald eagles (carnivore). How man
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It has 4 trophic levels.

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              /    Tertiary consumers          \

           /   Secondary Consumers           \

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To learn more about Photosystem II , here

brainly.com/question/13211869

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