Food, air, water, and shelter. People need these to survive. The Earth provides resources for all these things. Natural resources are materials found on the Earth. They include air, water, and land. They also include rocks, minerals, and soil. Even living things are natural resources. These are the building blocks of all the things we need to live.
Some of Earth's resources can be used over and over. These are called renewable resources. Others can't be replaced quickly. These are called nonrenewable resources.
Renewable resources can be used and replaced over and over again. Examples of renewable natural resources are fresh air, water, and soil. These materials are replaced by nature at a fairly fast rate.