GREENHOUSE EFFECT The glass windows of a greenhouse let in sunlight. The sunlight warms up objects inside the greenhouse. These objects then give off heat. The glass of the greenhouse, however, does not let out the heat. If the greenhouse lacks ventilation, all the heat stays locked inside and the temperature rises. This greenhouse effect also causes the inside of an automobile to become hot if its windows remain closed on a sunny day. The …showed first 75 words of 490 total…

…showed last 75 words of 490 total…to greater reflection of the sun's light by the atmosphere, which would tend to lower the temperature on Earth. Another factor helping to minimize the effect of increased amounts of carbon dioxide is the greater absorption of the gas by the oceans. Some scientists believe that water vapor plays a much more significant role than does carbon dioxide in the Earth's greenhouse effect and that fluctuations in it are therefore much more important. ------------------------------------------------------------------------ **Bibliography**