In 1950, erwin chargaff discovered that the percentage of adenine in dna equals the percentage of thymine, and that the percentage of cytosine equals the percentage of guanine. this proved invaluable to the eventual discovery of which aspect of dna?

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)