Answer:
Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils.
Explanation:
The answer is A which is CH4.
External fertilization is the correct answer.
Natural selection occurs to give help the best survival chance to the organisms.
It would smell like death