Question

8.Nitrogen is abundantly present in atmosphere but still a limiting agent for plants.Why​

Answer 1

Answer:

Although the nitrogen conversion processes often occurs and large quantities of plant nutrients are produced, nitrogen is often a limiting factor for plant. ... Nitrogen nutrients are water-soluble and as a result they are easily drained away, so that they are no longer available for plants.

Answer 2

Answer:

Nitrogen is not stable as a part of a crystal lattice, so it is not incorporated into the solid Earth. This is one reason why nitrogen is so enriched in the atmosphere relative to oxygen. ... Thus, over geological time, it has built up in the atmosphere to a much greater extent than oxygen.