In the Tropical Seasonal Forest of Central Kenya, Exclosures (Experimental

In the tropical seasonal forest of central Kenya, exclosures (experimental plots that excluded grazers) were used to study the influence of grazers on this community.Comparing grazed with ungrazed sites, researchers found that elimination of grazing increased the abundance of trees, which in turn increased the number of beetles and the number of lizards that fed on the beetles.This suggests that grazers

A) lead to the extinction of trees.
B) can establish trophic cascades by their effects on trees, beetles, and lizards.
C) can have direct effects on beetle and lizard communities.
D) act as ecosystem engineers.
E) are detrimental to the community.