Briefly describe what you think the world would be like if the amount of greenhouse gases in the atmosphere were reduced to levels like those during the ice age.

If there were less greenhouse gases, much of the infrared radiation that is converted to heat today would not be trapped in the earth's atmosphere. The earth's temperature would cool, and a new Ice Age would occur. Many plants and animals could not survive in this new condition, oceans would freeze, and weather patterns would change.

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