And if you like, that bit is short for nitrogen, what's nitrogen?

The same phenomenon is found for carbon, nitrogen and oxygen.

She added that the venture was expected to capture a significant share in the $1 billion annual market for gaseous nitrogen.

While the overall cycle is similar, there are different players and modes of transfer for nitrogen in the ocean.

Take the improved process for atmospheric nitrogen, as an example.

As a result, the authors argue, plants will respond by growing more leaves, provided they're not starved for water and nitrogen.

In other cases, there may be competition below ground for water, nitrogen, or phosphorus.

Denitrification is the most desirable sink for nitrogen in living machines.

The average needs for nitrogen could decrease, and give the opportunity of changing often costly fertilisation strategies.

The river is generally below standards for E.coli, clarity and nitrogen.