Is there suppose to be a question here?
Answer:
It is formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over millions of years. The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in the gas.
Explanation:
Answer:
A. one but I don't know about it. with out the word single the answer is B..
Its called osmosis and it only happens with water. now I'm just adding words to be able to post this. its moving down the concentration gradient.
