12. According to the concept of competitive exclusion,
a. two species cannot coexist in the same habitat.
b. extinction or emigration are the only possible results of
competitive interactions.
c. intraspecific competition results in the success of the
best-adapted individuals.
d. two species cannot share the same realized niche ina habitat.
e. resource partitioning will allow a species to utilize all
the resources of its fundamental niche.
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Slichter