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Beavers are known for constructing dams in riparian ecosystems. These dams help make moats around beaver lodges, which protect beavers from predators, as well as provide places for food storage and warmth during winter. These dams also help create and maintain wetlands, which provide habitats for numerous other organisms, and help filter out pollutants from (waterways. Beavers are considered to be a keystone species in their ecosystems.
What will most likely happen to their ecosystem if beavers are removed?

A. Biodiversity will decrease .
B. Wetlands will become polluted.
C. Riparian ecosystems will disappear.
D. Beavers' predators will become extinct.

Answer :

Answer:

A. Biodiversity will decrease .

Explanation:

  • The loss of a keystone species can cause extinction  or mass destruction of other species that are dependent on it because keystone species are those species which significantly influence the existence and survival of other species in an ecosystem
  • Since, beavers are considered as the keystone species, their removal  from the ecosystem will cause loss of many other species in the ecosystem resulting in Decrease in the biodiversity of that ecosystem.

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