Which of the following best describes the relationship of deforestation to sediment load?
A) Trees provide dissolved sediments to the stream; as trees are removed, the dissolved loads are diminished.
B) Trees roots help "anchor" soil; as the trees are removed, the soil more readily erodes into the river channels.
C) Forestry waste is often dumped in streams, contributing to the suspended loads.
D) The loss of trees along banks of streams increases stream velocity.
B
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If a certain species of bacteria is capable of reproducing quickly enough that it could cover the earth in a one foot layer in two days, why hasn't this happened?
What will be an ideal response?
The piling up of air above a region is called thickening
a. true b. false
The asthenosphere is the second layer of the Earth characterized by ________
A) hard rocks that break B) soft rocks that flow easily C) magma D) layers of both hard and soft rocks
The ________ west coast climate is situated on the western (windward) side of continents from about 40 to 65 degrees north and south latitude
A) subtropical B) continental C) humid D) Mediterranean E) marine