| A | B |
| cans | aluminum |
| coal | dug out of mines |
| conservation | preservation of resources |
| consume | use up |
| contaminated | polluted |
| crisis | big problem which must be solved |
| deforestation | removing the forests |
| desertification | turning land into desert |
| develop | grow |
| Earth | our planet |
| emissions | what comes out of factories and cars |
| empower | to make stronger |
| endangered species | animals that may disappear |
| erosion | soil that is worn away |
| explosion | sudden & dramatic increase |
| extinction | process of species disappearing |
| fertility | ability to give birth |
| forests | trees |
| fossil fuel | petroleum |
| garbage | trash |
| global warming | earth getting warmer |
| growth | getting bigger |
| habitat | area where something lives |
| human race | homo sapiens |
| industrialized | developed |
| industry | factories |
| issues | problems |
| nonrenewable | gone forever once used up |
| oxygen | what we breathe |
| ozone layer | aerosol spray hurts this |
| plants | give us oxygen |
| pollution | dirty air |
| population | number of people |
| preserve | keep in good condition |
| pressure | pushing against something |
| protect | keep from harm |
| radiation | comes from the sun |
| rainforest | tropical forest with many kinds of animals & plants |
| recycle | use again to make new products |
| reduce | use less |
| renewable | won't be used up |
| resources | water |
| reuse | use again |
| soil | dirt |
| stabilize | make stable |
| survive | live |
| sustainable | able to continue |
| volunteer | work for free |
| waste | use too much |
| wildlife | wild animals |