The radiant energy of the sun is used by autotrophs to produce:

anti-human ngf stable cell line (fulranumab) can be provided from creative biolabs.

explanation:

d. planting trees

the trees take in carbon to make oxygen.

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.