After dams were built upstream to regulate the flow of water, the trees of some hardwood forests in the Pineywoods ecoregion of Texas died. Which statement gives the most likely connection between the dams and the death of trees? A. Dams block the movement of fish, and many trees depend on fish for nutrients. B. Dams generally reduce the flow of water, and this increases water erosion that destroys trees. C. Dams divert water to other areas, and organisms in those areas compete with trees for resources. D. Dams are used to control flooding, and flooding deposits sediments needed for healthy soil.
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