Which of the following is a new bio-fertilizers?

A. Green Blue Algae

B. Nitrates

C. Compost

D. Farmyard manure

Answer: Option A

Solution(By Examveda Team)

Green Blue Algae is a new bio-fertilizers. Cyanobacteria, or blue-green algae, is one such example of a bio-fertilizer, a type of organic fertilizer which contains living organisms and harnesses naturally occurring inputs like solar energy, nitrogen, and water to ensure soil fertility and plant growth.