Question

Why is nitrogen fixation such an important step in the nitrogen cycle?

Answer 1

Answer: The correct answer is plants can't use nitrogen in the form of $N_2$

Explanation:

Nitrogen fixation is carried out by a variety of bacteria. These can act as free-living organisms or in symbiotic relation with plants.

Nitrogen fixation is the process in which organisms convert nitrogen in the soil to ammonia which is taken up by the plants. This process is the main source of the nitrogen in the soil which is required by the plants to grow.

Therefore, nitrogen fixation is one of the most important processes on Earth.

Hence, the correct answer is plants can't use nitrogen in the form of $N_2$

Answer 2

Plants cant use nitrogen in the form of N2