If reproduction stops in (This is an example) fish, the fish population will decrease by a large margin. It will also mean that there will be no fish for us and the predators that hunt fish. Those predators' population will decrease as well since fish will decrease. That is why reproduction is a must.
Cyanobacteria are capable of photosynthesizing. The key difference between bacteria and cyanobacteria is that bacteria do not produce free oxygen during their photosynthesis while cyanobacteria are capable of producing free oxygen during the photosynthesis.
-Photosynthesis fixes carbon dioxide during the Calvin cycle, whereas cellular respiration releases carbon dioxide during the Krebs cycle. ... The electrons that are released by the splitting of H2O molecules during photosynthesis ultimately end up in: -glucose.
