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Evolution of Our Atmosphere

NAME-_________________________pd._____
Dynamic Earth   Mr.Prussman       ATMOSPHERE
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Across
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This gas was formed by photo-chemical reactions of the sunlight and Oxygen.
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78% of earth's modern atmosphere consist of________.
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This process in plants and algae released oxygen into the atmosphere on earth.
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The first gases released by ______outgasing were carbon dioxide and water vapor 3.5 billion years ago on earth.
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Water vapor, nitrous oxides, carbon dioxide and________ are greenhouse gases.
Down
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The water vapor in earth's early atmosphere condensed to form earth's _________.
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Our atmosphere is able to trap heat and ______ the earth, making life possible on earth.
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The increase in these gases is causing earth's climate to become warmer.
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The ozone layer protects organisms from harmful UV________ from the SUN.
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_________fuels on earth store carbon dioxide which is released into our atmosphere by combustion