By Mishelle Tongco

A useful or valuable thing.

The ability to be sustained ,supported, upheld, or confirmed.

Reduction in the number or quantity of something.

An official supervision of rivers, forests, and natural resources in order to preserve and protect them through prudent management.

A Continuous resource is when a resource will virtually always exist. They include solar energy, rainfall, wind and wave action

A renewable resource is a resource which can be replaced naturally and can be used again. Examples: oxygen, fresh water, solar energy, timber, and biomass.

A resource that cannot be replaced by natural things. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources because their formation takes billions of years

The interaction and impact of human societies on the environment.