Why don't all organisms become fossils when they die?

Oxygen...

Explanation:

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.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.