Заполнить пропуски правильной формой глагола 1. when parents arrived home their a) were sleeping b) slept c) have slept already d)have been sleeping 2. galileo proved that the the sun a) had moved b)moves c) will move d) is moving 3. london in next week. a) came b)shall come c) comes d)had come 4. work already. a)finished b)shakk finish c)have finished d) are finishing the institute? | a)are studyng b)shall study c)do study d ) does study

all over the history of civilization our nature and its resources is increasingly exploited. when the resources exhaust, the nature becomes "sick". in this situation, it will be all about basic survival, not about the prosperity of mankind. nowadays acid rains, poisoned water and air pollution are the reality we live in.

all around the world there are big cities with thousands of industrial manufactories growing. the result of their work are dangerous substances that poison the air we and our children breathe, the water we drink and the soil on which we grow food.

forests are being cut down rapidly. the large-scale wildfires also contribute to deforestation a lot. unless something is done, people will have nothing to breathe.

water resources are also under the threat. oceans, seas, lakes and rivers are poisoned by industrial and nuclear waste, chemicals, pesticides and herbicides. there will be the day when nothing can live in the sea.

moreover, air is polluted by human activities. plants and factories emit huge amounts of chemicals, which has awful consequences for the environment. for example, acid rain and global warming.

fortunately, the situation is not that bad. if people are aware of that and try to make our world better, then together we can save both the earth and ourselves.