Explain the concept of nitrogen as a limiting nutrient? What are the consequences of over-fertilizing crops with NPK or nitrogenous fertilizers?

Nitrogen is a substance for the production of ammonia NH3 and other substances, as well as for the growth of plants, which reaches the plant through the nitrogen cycle, but nitrogen fertilizers are also injected into the soil to strengthen the plant, but excessive injection of nitrogen fertilizer kills the plant. Is

b.have there own function.

the animal that would be cutest if scaled down to the size of a cat? elephant