PLZZ help me with number 5!!!

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%

When energy is used, atp molecules convert to adp molecules. this process is called

1)some people believe that certain drugs such as marijuana should be legalized. do you agree or disagree? 2)what impact might legalization have on forensic science as a field? which drug presents the greatest challenges to forensic science? why?