Pollution is always a good way to go but you don't have to do air pollution you can do water pollution or both air and water pollution.
C: lack of water during long periods..
Answer:
During METAPHASE the chromosomes line up along the equatorial plate.
Question #1: D
Question #2: B
These are the correct answers hopefully. I knew the second one, but the first one I had to look up and do a wee bit of research
The main reason for the species extinction is for the ecological changes.
