Global Warming

Автор работы: Пользователь скрыл имя, 07 Апреля 2013 в 17:37, реферат

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Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die. This is due to the greenhouse effect.

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