What cells are you talking about?
Answer:
Organisms decompose more quickly when they are in contact with oxygen. ... When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts.
Explanation:
the atmospere would drift off into space
none needed
uhm, though the graph doesn't match the problem, I remember doing this when I was in bio. If you are looking for the genome, it would be something along the lines of Gg, or GG (G=green dominant, g=yellow recessive)
I hope this is what you need!