Opinion of how humans depend on ocean
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oceans are the life blood of planet earth and humankind .they flow over nearly three quarters of our planet and hold 97%of the planets water. they produce more than half of oxygen in the atmosphere and absorb the most carbon from it.
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The first life on earth has started under oceans. From ancient timés human beings have been depending on oceans for their food and livelihood.
Oceans are rich sources of fossil fuels.
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