Resources provide ingredients for food, fuel, and goods. Nonrenewable resource A natural resource from the Earth that exists in limited supply, like oil or coal. Once this supply is used up, the resource is gone forever. Oxygen A gas that exists naturally in the atmosphere and is produced by plants during photosynthesis that humans and other animals breathe. Packaging Wrappers or containers used to protect food or other products from dirt, germs, and damage.
Packaging often provides information about the product.
Sometimes goods contain more packaging than they need. Pellets Little plastic balls that can be stretched into long fibers to make thread. Petroleum An oily liquid that can be pumped from the Earth and used to make items like plastic and gasoline. Photosynthesis During this process, leaves use sunlight to turn water from tree roots and carbon dioxide gas from the air into sugar. This helps plants grow and provides oxygen for people and animals to breathe.