Question

The Mississippi watershed is the largest in North America, draining all or part of thirty-two states in the United States and two Canadian provinces. A new apartment complex is being built on a steep slope near the source of the Mississippi River outside of Minneapolis, Minnesota. Which of the following measures should be taken to best reduce erosion at the construction site to protect the Mississippi watershed?
Add a paved surface at the top of the slope.

A
Add a paved surface at the top of the slope.

B Remove trees and shrubs from the slope and the riverbank.

C Move all of the topsoil from the site to the riverbank.

D Plant grass and shrubs on the slope.

Answer 1

Answering the question, the measures that should be taken to best-reduced erosion at the construction site to protect the Mississippi watershed is to remove trees and shrubs from the slope and the riverbank.

The largest drainage in the North America is the Mississippi watershed. The area it covers is 3.2 million square kilometers which also include all 32 US states and 2 Canadian provinces.

Further Explanation

The total area of the Mississippi watershed represents 40% of the entire landmass within the continental United States.

The Mississippi watershed is also the fourth largest around the world. The watershed also reaches some part of the Allegheny Mountains within the east and also extends to the Rocky Mountains in the west.

The Mississippi watershed consists of several tributaries and when combined with Mississippi-Missouri River makes it the fourth-longest in the whole world.

Within the watershed, the highest point is the mountain Albert and the Rocky Mountains while that watershed traditional source is lake Itasca which is in northern Mexico. It also flows through the south at 2,320 miles towards the Mississippi River Delta which is in the Gulf of Mexico.

The watershed passes through some states in the US and these states include

• Louisiana
• Kentucky
• Illinois
• Iowa
• Tennessee
• Arkansas
• Minnesota
• Wisconsin

Learn more about Mississippi watershed at:

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Answer 2

Answer:

D. Plant grass and shrubs on the slope.

Explanation:

Vegetation cover is the most important factor in soil protection because it affects soil erosion in several ways, namely: through the spatial effects of vegetation cover, the kinetic energy effects of rain and the role of vegetation in aggregate stability.

Vegetation cover, such as grass and shrubs, is able to reduce erosion rates on slopes through: rain impact protection, decreased runoff, decreased runoff velocity and increased water infiltration capacity in the ground.