Enrique hears about the accelerated global extinction rate due to rain forest deforestationand the destruction of other habitats worldwide. He comes to the conclusion that allextinctions are caused by humans and are harmful to the biosphere. Critique hisconclusion.

synapse nervous system

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.