2. Analyze and critique the endosymbiont theory for the
of plastids. Include all sides of scientific evidence for the
explanation.

what's the question ?

i dont know it at allnow im just getting points at this pint

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.

answer: i feel like it would be 3

explanation: