Identify and describe the 4 ways variation is introduced during meiosis. Why is it important to have variation in populations?

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

How is anaerobic respiration affected by changes in temperature? (5 points)based on the conditions of early earth, what conclusion can you draw about the amount of anaerobic respiration that was occurring at earth’s beginning? explain your answer.(5 points)if there was a sudden drop in temperature after the evolution of the first living cells, predict how that might have affected the changes in the atmosphere and the evolution of cyanobacteria and other autotrophs. explain your answer. (5 points)

What is the role of pancreatic juice in digestion?