Eli5 why plants which need nitrogen from the ground do not take it from the air which is 70% Nitrogen

Question

Eli5 why plants which need nitrogen from the ground do not take it from the air which is 70% Nitrogen

In: 308

Answer 1

Also some plants do take all their nitrogen from the air, they are called “nitrogen fixers” and actually exude extra nitrogen into the soil. Most legumes are nitrogen fixers.