Question

The ecologists and the environmentalists are against big dams and multi purpose projects as it _________.

• A. Produces hydroelectricity
• B. Produces more vegetation and soil
• C. affects their natural flow causing excessive sedimentation on the rivers beds resulting in poor habitat for the rivers aquatic life
• D. Easy for the aquatic fauna to migrate

Answer 1

Answer: (C)

affects their natural flow causing excessive sedimentation on the rivers beds resulting in poor habitat for the rivers aquatic life

• In recent years Dams and multi purpose projects have come under great opposition and scrutiny for various reasons:
  
• 1. Regulating and damming of rivers affect their natural flow causing excessive sedimentation on the rivers beds resulting in poor habitat for the rivers aquatic life.
  
• 2.Dams also fragment rivers making it difficult for the aquatic fauna to migrate especially for spawning.
  
• 3.The reservoirs that are built on the flood plains also submerge the existing vegetation and soil leading to its decomposition over time.