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Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
The small dorsal fin of this blue whale is just visible on the far left.
Soil and the Carbon Cycle
The two major forms of polynucleotide secondary structure
Metabolic reactions involving synthesis, interconversion, and utilization of one-carbon adducts of t
Partial pressures (in mm Hg) for oxygen (red boxes) and carbon dioxide (blue boxes) in the atmospher