A farmer grew another crop with all three minerals added. The maximum yield obtained was 12 kg per m2. He grew the same crop with no nitrate and the yield was 5 kg per m2. Calculate the percentage of the maximum yield when the crop was grown with no nitrate.

Answer %
(2)

d is the answer

sorry if its wrong!

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

d. changes in climate and historical records

hope this