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 are used to control flooding, and flooding deposits sediments needed for healthy soil.

B.

Dams generally reduce the flow of water, and this increases water erosion that destroys trees.

C.

Dams block the movement of fish, and many trees depend on fish for nutrients.

D.

Dams divert water to other areas, and organisms in those areas compete with trees for resources.

Please help!

Proteins vitamins and a carbohydrate is a atom

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.