Coal is a nonrenewable resource that is mined from the ground. Coal has been used by humans as a major source of energy production since the Industrial Revolution in the 1800s. Which of the following must be true about the Earth's supply of coal?

Question

A.
The supply of coal has increased since the 1800s.
B.
The supply of coal has not changed since the 1800s.
C.
The supply of coal has decreased since the 1800s.
D.
The supply of coal is constantly being renewed.

Answer 1

C. The supply of coal has decreased since the 1800s.