| A | B |
| coal | nonrenewable resource |
| sunlight | a resource that cannot be used up |
| natural resources | Important materials from Earth that living things need |
| ore | nonrenewable resource that contains metals |
| paper | makes up most of our trash |
| conservation | Using natural resources wisely |
| reduces landfill waste | special furnace for trash and making less waste |
| trees | renewable resource because you can make more |
| nonrenewable resources | oil, coal, iron ore, aluminum |