Question

a major hydroelectric power plant will be constructed along a river near the city of fairville. to do this, a dam must be constructed in conjunction with the hydroelectric power plant. however, a committee to oversee the environmental impacts insists that the planning of the dam take into consideration the impacts on biodiversity. which of these proposals would be beneficial to implement to ensure the preservation of biodiversity? (choose 2)
a build levees to control the flooding upstream of the constructed dam.
b relocate wetlands that would be displaced by the construction of the dam.
c construct an aquaculture farm adjacent to the dam to maximize fish populations.
d increase the flow rate of the water so that there is an increase of sediment downstream.
e construction of fish ladders to provide a mechanism for migrating species to move upstream.

Explanation:

• Option B: Wetlands are critical biodiversity hotspots; relocating displaced wetlands preserves the habitat for species dependent on them, supporting biodiversity.
• Option E: Dams block migratory fish paths, which disrupts their life cycles and reduces populations. Fish ladders allow migratory species to move upstream, maintaining their natural behaviors and survival.
• Option A: Controlling upstream flooding can alter natural river ecosystems that rely on periodic inundation, harming biodiversity.
• Option C: Aquaculture farms often focus on a single or limited fish species, can introduce invasive species or pollutants, and do not support natural biodiversity.
• Option D: Artificially increasing downstream sediment flow can disrupt downstream habitats, smothering aquatic life and altering the river ecosystem negatively.

Answer:

B. Relocate wetlands that would be displaced by the construction of the dam.
E. Construction of fish ladders to provide a mechanism for migrating species to move upstream.