The diagram below shows data about 2 populations of 2 species
of Paramecium. The first graph shows the 2 species' population growth when kept
in separate culture bottles. The second graph shows what happens when both species
occupy the same bottle.
1. This is an example of interspecific
competition because 2 species are involved. Intraspecific competition involves
competitions for resources amoung members of the same species, as when many
sunflower seedlings compete for sunlight, water, and minerals in the soil when
they are planted too closely together.
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