Answer:
1) oil
2) natural gas
Step-by-step explanation:
In the transportation industry, oil is the fossil fuel that is mostly used. Oil can be refined to give various petroleum products which are heavily used in the transportation industry such as gasoline, petrol, diesel oil, etc.
In the area of electricity generation, natural gas accounts for 40% of the power generation in the United States of America. About 1582 billion Killo-watt hour of electricity in the United States of America is generated via natural gas. This represents about 40% of the nations total power generation capacity.