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A keystone species is a species whose presence
a Influence...
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PLEASE HELP I DONT HAVE MUCH TIME
A keystone species is a species whose presence
a Influences the population size of many other species in its community
b Is an indicator of environmental health
c Is the main reason a community exists
d Is always at the top of the trophic levels as a top predator e Provides food for all other species in a community
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