On because of the suns heat. So, it would be on to protect it from sunburn.
Answer:
Cells do not generally allow such materials to go in because they are having a cell membrane outside. The cell membrane only allows the materials which are required for the growth of the cell such as water and minerals.
Well if it could not adapt it would die. Either it would be killed by a more superior species, natural selection would take its course, or it just wouldn't be able to survive.
Desity=V/M so you would divide 12.0 by 6 and you would get 2.
The answer is 2.