Oil formation occurs where millions of years ago there were large oceans. this is because oceans have A- waves that are constantly moving

B- great numbers of tiny marine animals

C-currents that mix the water throughly

D-deep caverns where no light can reach

A- waves that are constantly moving

Explanation:

Oil is formed from remains that settles in the ocean over the year,this remains are be acted upon by bacteria in the oceans to form hydrocarbons from where fossil fuel is formed in the ocean floor. This is possible because of the movements of waves in the ocean that allows for mixing of this remain and its movement to ocean floor.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.