Question

How are dams considered to be a threat to the environment?

Answer 1

they destroy the ecosystem and vegetation around them

Answer 2

Answer:

Dams are considered as a Threat to the Environment and Ecosystem.

Because in the Making of Dams Trees are Cutted Down (Deforestation occurs) and this leads in decrease of Oxygen.

Hence, Environment of the place where the Dams are constructed get Disturbed.

Which is why, The Making of Dams is known as A Threat to the Environment and Ecosystem.

Explanation:

The Creation of Dams also leads to Destruction of The Lives of Those Living Creatures on Thise Trees which are Cutted.

Hope this Helps!