CO2 is an important trace gas in Earth's atmosphere. It is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and the biosphere. Plants and other photoautotrophs use solar energy to produce carbohydrate from atmospheric carbon dioxide and water by photosynthesis. Almost all other organisms depend on carbohydrate derived from photosynthesis as their primary source of energy and carbon compounds.
The answer is:
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The hydrosphere.
Density is related to weight and box measurements. Since the box is the same only factor changing the density of the box is the weight of what’s in it. Box with marbles has the greatest density
<span>D. Overcrowding and destruction of rain forests</span>