Question

.) Blue green algae fix of soil. directly from air and enhance fertility​

Answer 1

Answer:

Blue green algae fix atmospheric nitrogen directly from air and enhance fertility of soil. Nitrogen helps in increasing the fertility of the soil and that's why azolla is grown with rice in fields because BGA (Blue green algae) is present in the leaves of azolla which increases the productivity of rice fields.

Explanation:

I hope this answer help you. Follow for more answers.

Answer 2

Answer:

• blue green algae fix atmospheric nitrogen directly from the air and enhance fertility of soil .
• hope this answer is helping u