Объяснение:
А) 1945
Г) 1902
Today we know a lot of different ecological problems. Every of them has a bad effect on our environment and now we extremely need to find a way to solve them. It goes without saying that all these phenomena caused by human activities. Factories should stop to dumb chemicals into lakes and rivers. People must change thier habits and start to sort rubbish. Also governments all over the planet need to make special laws and punish people who break them. I think, if we do that all our problems will be solved.
