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Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
(a) Feeding by bear on salmon results in large allochthonous inputs of nutrients into (b) the forest
shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae
Solar energy heats the atmosphere, creates seasons, and causes air to circulate
The presence of large areas of methane hydrate
Relative expression times and amounts of cyclins during the cell cycle