which area on the illustration represents the largest reservoir of nitrogen on earth?\n1\n3\n4\n7

which area on the illustration represents the largest reservoir of nitrogen on earth?\n1\n3\n4\n7
Answer
Brief Explanations:
The atmosphere is the largest reservoir of nitrogen on Earth. Without seeing the specific labels in - depth, but generally, the atmosphere - related part would be the answer. Assuming 1 represents the atmosphere in the given illustration, it is the correct choice as nitrogen makes up about 78% of the Earth's atmosphere.
Answer:
1