Answer: A and D
Because photosynthesis takes in carbon dioxide and releases oxygen for people to breath
Hope this helps you :)
I would say it would respond w/ it hurting and your gasping for air because when you run for a long periods of time u get a pain that hurt from running so much and because your dehydrated and ran out of breath
They live in groups for protection from predators could be one
Primary spermatocytes, spermatids
