In african savannas elephants are a keystone species. elephants eat small trees, such as acacia, that grow on the savanna. even if an acacia tree grows to a height of several feet, elephants are able to knock over the tree and uproot it. imagine a drastic decline the elephant population that live within the african savannas. what would be the inevitable result? a) the savanna would decline and evolve into a desert ecosystem. b) predators would replace the elephants as the keystone species. c) another large herbivore would immigrate and replace the elephant. d) the savanna would succumb to succession and evolve into a woodland.

The correct answer is option D, that is, the savanna would succumb to succession and evolve into a woodland.

Explanation:

The elephants are considered as the keystone species of Savannas in Africa. The tendency of the elephants to knock down the several feet high acacia trees for the purpose of feeding gives the Savannas its characteristics of a grassland. In case if the elephants get disappear then there will be an increase in the population of acacia trees and gradually the Savannas would get transformed to woodlands from grasslands. Thus, there will be a distraction of diversity in Savannas.

d) center of the mid-ocean ridge

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