WHO KNOWS HISTORY(if you don't that's okay you can still do it!)? can someone who knows how to do research answer my 4 questions that i asked. i will reward you by giving you extra points

Which event would lead to primary succession of a forest?

Can someone me i need the answer and don’t understand?

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)