The oceans on earth act as carbon sinks
the combustion of fossil fuels
atmospheric carbon dioxide is continuosly exchanged
vegetation and soil take in more co2 than they release
Two limits to cell growth is by rates of protein synthesis and by the folding rates of its slowest protein
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Grizzly bears: As predators, bears keep down the numbers of several species, like moose and elk. They also carry and deposit seeds throughout the ecosystem. Bears that eat salmon will leave their dropping and the partially eaten remains that provide nutrients such as sulfur, nitrogen and carbon to the soil.
