Therefore, the biogeochemical cycling of nitrogen is important, because it transforms nitrogen between bioavailable ... for the next phytoplankton growth period. A schmetic diagram of the nitrogen ...

It's hard to find a diagram of the carbon or nitrogen cycle that doesn't show factories and fertilizers. However, our drawings of the water cycle are stuck in the 17th century." "Better drawings ...

Textbook diagrams of the nitrogen cycle now show only microbes performing that task, Hipkin and his colleagues say in the July 1 Nature. “This is the first paper I have seen that shows plants ...