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 Form 1 Geography Online Lessons on The Structure of The Earth

The Hydrosphere

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Answer Text:
b) The Hydrosphere
• Part of the earth’s surface covered by water masses e.g. oceans, seas, lakes, rivers and even underground water.
• It comprises 73% of the earth’s surface area.
• The atmosphere and hydrosphere are related in that atmospheric gases penetrate to the ocean depth in solution form.
• The lower atmosphere, hydrosphere and the upper part of the earth’s crust are called biosphere meaning the sphere of the earth in which organic life exists.


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