Elephants are not the most common species in African grasslands, but they strong

Question

Elephants are not the most common species in African grasslands, but they strongly influence the ecosystem. The grasslands contain a few shrubs and trees, but the populations of these shrubs and trees are kept small because elephants eat them. Take away the elephants, and the grasslands become forests. Many species which live in the grasslands do not survive very well in the forests.  Additionally, the new forests support fewer total species than the original grasslands.  Therefore, elephants are a _____ species in African grasslands.

Explanation / Answer

Elephants are a mega-herbivore and keystone species in African grasslands because its presence and absence can cause profound changes in complete ecosystems.

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