The cycle of carbon movement between the biosphere, atmosphere, hydrosphere, and geosphere is a complex and important global cycle. ... Carbon is continuously circulated between reservoirs in the ocean, land, and atmosphere, where it occurs primarily as carbon dioxide.
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I don't know correct answer but I think it is <em>night time</em> in b point.
It is the baby's life support system and breathing organ while in the womb. The placenta allows oxygen and nutrients to move from the mothers blood to the fetus' blood.
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A national park is a reserved area of land owned by the government which is protected from industrialization, human exploitation, and pollution.
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Difference Between Wildlife Sanctuary, Biosphere Reserves and National Park.
Wildlife SanctuaryBiosphere ReservesNational ParksNot requiredSubject to the particular area of the biosphere reservePermission is required