Question

he following computer model was created to illustrate how a watershed can be affected by human activities. What is the most likely reason for placing the farm land upstream from the factories?
answer choices
a. The water at the highest point of the river will have been impacted the least by human activities, so it should be the cleanest.
b. Farms do not have a negative impact on watersheds, so they should be placed upstream.
c. The factory puts pollution into the air, so it does not matter where the farm is located.
d. The farm should be placed upstream because pesticides from the farm will end up in the river, which is beneficial for the factories downstream.

Answer 1

Since human activity will have had the least impact on the water at the river's highest point, it should be the cleanest.

Which change in sediment would be brought about by the construction of a dam?

One of the reasons for less sediment discharge into the sea is the installation of dams on rivers, which catch sediments in reservoirs. Dams restrict the amount of silt that reaches an estuary and the nearby coast, which speeds up coastal erosion.

Do dams affect the quality of the water they hold?

The water quality of the streams where dams are located can be impacted by the dams themselves and their impoundments (the body of water formed behind a dam). A stream needs high-quality water to be healthy. Too little oxygen and too much heat might have serious consequences.

Learn more about dams here:

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