Answer :
D) The nitrogen and oxygen in the earth's atmosphere keep the surface pleasantly warm.
The air in Earth's ecosystem is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of different gases, too, which include carbon dioxide, neon, and hydrogen.
Earth's ecosystem is composed of approximately seventy eight% nitrogen, 21% oxygen, and one percent different gases. Those gases are determined in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) described via unique features including temperature and pressure.
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