Конспект урока на тему «The Greenhouse effect»

The Greenhouse effect

The Greenhouse effect is very important; if it didn’t exist at all, the temperature of our planet would be 40 degrees lower and the oceans would freeze. But an increase in the greenhouse effect may equally lead to global warming with disastrous consequences.

The higher average temperatures produced by global warming could cause dramatic changes in weather patterns. Less rain might fall over large land masses; Central Africa, South Asia and some parts of the United States could risk severe drought and famine. More rain might fall in coastal areas and over the oceans, and there might be more storms and hurricanes in the Pacific. A rise in the earth’s average temperature of only one or two degrees would probably melt the polar ice caps and raise sea levels. Sea levels throughout the world are already rising by about two millimetres a year. If the polar ice caps do melt, sea levels could rise by more than a meter over a few decades.

A. The greenhouse effect only leads to disastrous consequences.

B. Without the greenhouse effect the climate on the earth would be much colder.

C. Because of global warming there is now an increased risk of drought and famine in parts of Africa and Asia.

D. If there is a rise in temperature of one or two degrees, the sea level will rise by about two millimetres a year.