Question

implications of big dams ​

Answer 1

Dams change the way rivers function. They can trap sediment, burying rock riverbeds where fish spawn. Gravel, logs, and other important food and habitat features can also become trapped behind dams. This negatively affects the creation and maintenance of more complex habitat (e.g., riffles, pools) downstream.Large dams are often criticized because of their negative environmental and social impacts: changes in water and food security, increases in communicable diseases, and the social disruption caused by construction and involuntary resettlement.

Answer 2

Explanation:

Large dams are often criticized because of their negative environmental and social impacts: changes in water and food security, increases in communicable diseases, and the social disruption caused by construction and involuntary resettlement.