Question

Which statement best explains how the Aswan High Dam contributes to pollution?

Fumes from the dam’s hydroelectric power plant affect the air quality.
Waste and chemicals flow from the dam and result in ground pollution.
The dam cannot control flooding, which leads to water pollution along the river.
The dam affects the soil, which causes farmers to use fertilizers that create pollution.

Answer 1

The Aswan High Dam contributes to pollution through fumes from the hydroelectric power plant, waste and chemicals flowing from the dam, and the dam's impact on soil fertility leading to increased fertilizer use.

Step-by-step explanation:

The Aswan High Dam in Egypt contributes to pollution in several ways:

1. Fumes from the dam’s hydroelectric power plant affect the air quality. The burning of fossil fuels in the power plant releases pollutants into the air, such as carbon dioxide, sulfur dioxide, and nitrogen oxide, which can lead to smog and respiratory problems.
2. Waste and chemicals flow from the dam and result in ground pollution. The construction and operation of the dam generate waste materials, including cement, chemicals, and excavated soil. If not properly managed, these materials can contaminate the surrounding soil and groundwater.
3. The dam affects the soil, which causes farmers to use fertilizers that create pollution. The regulation of the Nile's flooding by the dam has led to a buildup of salt in the soil, reducing its fertility. To compensate, farmers often use fertilizers, which can contribute to water pollution if not used judiciously.

Answer 2

The answer on e2020 is "The dam affects the soil, which causes farmers to use fertilizers that create pollution".