A Keystone Species Is a Species Whose Presence

question 31

Multiple Choice

A keystone species is a species whose presence

• A)Is the main reason a community exists
• B)Provides food for all other species in a community
• C)Is an indicator of environmental health
• D)Influences the population size of many other species in its community
• E)Is always at the top of the trophic levels as a top predator