ГДЗ Англійська мова 11 клас Карпюк 2019

Have you ever heard about the greenhouse effect? It work.4 like this; sunlight gives us heat. Some of the heat warms the atmosphere, and some of the heat back into apace. Nowadays the air surrounding the earth has become much warmer because the heat can’t go back into space. That's why winter and summer temperatures in many places have become higher. During the last 100 years people have produced a lot of carbon dioxide. This in the atmosphere works like glass in a greenhouse. It lets heat get in, but it doesn't let much heat get out. So the atmosphere becomes warmer. Where does the carbon dioxide come from? People and animals breathe in oxygen, and breathe out carbon dioxide. We produce carbon dioxide when we burn things. Trees lake this gas from the air, and produce oxygen. But in the last few years, people have cut and burnt big of rainforest. This means there are fewer and, of course, more carbon dioxide! As we see the climate in different parts of the world changes a little from year to year. These changes can be dangerous for our fragile planet which needs protection. Earth is millions of years old, much older than the humans. We know many of its secrets. Yet there is still much to learn.