Given a scientific question, generate a correct answer to it.
One example is below.
Q: Who proposed the theory of evolution by natural selection?
A: darwin
Rationale: This is a direct fact that Charles Darwin proposed the theory of evolution.
Q: Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. atmospheric nitrogen, which is the diatomic molecule n2, or dinitrogen, is the largest pool of nitrogen in these?
A:
terrestrial ecosystems