| 1.There is a growing concern over the … of species habitat and … . | | |
| 2.The earth's resources are being … at an alarming rate. | | |
| 3.The greenhouse … is an increase in the amount of carbon dioxide and other … in the atmosphere which is believed to be the cause of a gradual … of the surface of the Earth. | | |
| 4.The energy generated by the … is both very efficient and clean. | | |
| 5.There have been many reports about … which is destroying large areas of tropical rain forest. | | |
| 6.The Japanese … more than half their waste paper. | | |
| 7.We're not doing enough to protect the environment from … . | | |