There is no doubt that the environment is in trouble. Factories burn fossil fuels which produce ac (76) rain, and this kills trees. At the same time, green house gases rise into the air and contribute to global w (77) , which threatens to melt the polar ice cap. Meanwhile farmers clear huge areas of rain forest in places such as the Amazon to produce feeding land for cattle or produce w (78) for building. Rivers and oceans are so heavily contaminated by industrial waste that it is no longer safe to go sw (79) . Cars pump out poisonous gases which we all have to breathe in. Poaching and overfishing are killing off millions of animals, including whales, elephants and other end (80) species. In fact, all around us, all living things large and small which comprise our finely balanced ecosystem are being systematically des (81) by human greed and thoughtlessness.There is a lot we can do, however, to help prevent this. The easiest thing, of course, is to rec (82) waste material such as paper and glass so that we can use it again. We should also check that the things we buy from sup (83) are packed in biodegradable packaging which decomposes easily. At the same time, we should make a conscious effort to avoid foods which are gen (84) modified. Of course, if you are truly committed to protecting the environment, you should only buy org (85) fruit and vegetables, safe in the knowledge that they have been naturally cultivated. Finally, we should buy a small car that uses unleaded petrol which is less bar (86) to the environment or, even better, make more use of public transport.The serious env (87) , however, do much more. They are aware of the global issues involved and will actively involve themselves in conservation programmes by m (88) sure our forests are kept safe for future generations. They will op (89) activities which are harmful to animals. And they will campaign to keep the Green Belts around our towns and cities free from new building.We cannot all be as committed as them, but we can at least do our own little bit at grass roots level. We, as humans, have inherited the earth, but that doesn’t mean we can do wha (90) we like with it. 86（）