What is the use of biochar in farming?1. Biochar can be used as a part of the growing medium in vertical farming.2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time.Which of the statements given above is/are correct?

What is the use of biochar in farming?1. Biochar can be used as a part

1.	What is the use of biochar in farming?1. Biochar can be used as a part of the growing medium in vertical farming.2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time.Which of the statements given above is/are correct?
A.	1 and 2 only
B.	2 only
C.	1 and 3 only
D.	1, 2 and 3
Answer» E.