: These are formed underground from the remains of once-living organisms (biomass) over millions of years. They are currently the world's primary energy source due to being relatively inexpensive and readily available.
Nonrenewable resources exist in limited quantities. Once they are used, they cannot be replaced except over millions of years. section 15.3 energy resources answer key pdf
: Primarily used for transportation and heating. : These are formed underground from the remains
: The most abundant fossil fuel in the U.S., accounting for 25% of the world’s supply. Once they are used, they cannot be replaced
: Composed mainly of methane; used for heating, cooking, and electricity.
The study of energy resources in focuses on how humans harness natural power to meet modern demands while balancing environmental health. This section typically divides resources into two primary categories: nonrenewable and renewable , while emphasizing the critical role of energy conservation. 1. Nonrenewable Energy Resources
: While not a fossil fuel, uranium is a nonrenewable mineral mined from the Earth. It provides steady power through nuclear fission but presents challenges like radioactive waste disposal. 2. Renewable Energy Resources