Vast quantities of natural gas are located beneath Earth's surface. Natural gas is less costly to extract from the ground than crude oil. Natural gas offers some advantages compared to other energy sources. Despite the large amounts of natural gas, why is it classified as NONRENEWABLE, rather than a RENEWABLE, resource? a
Natural gas is available underground but not in the atmosphere.
b
The formation of natural gas is a process that takes millions of years.
c
Natural gas can be extracted only during certain times of the year.
d
The cost of extracting natural gas from the ground is greater than its value.