Crude oil was formed millions of years ago from the remains of living things.where is crude old found today?
A. Under dry land and under the ocean
B. Floating in the ocean
C. Inside rocks
D. Inside living things that have died
5 answers
A. Under dry land and under the ocean
Which fuel creates the most air pollution when burned?
A. Coal
B. Clean fuels
C. Natural gas
D. Electricity
A. Coal
B. Clean fuels
C. Natural gas
D. Electricity
A. Coal
When were fossil fuels formed?
A. Millions of years ago
B. Tens of billions of years ago
C. Hundreds of years ago
D. Tens of years ago
A. Millions of years ago
B. Tens of billions of years ago
C. Hundreds of years ago
D. Tens of years ago
A. Millions of years ago