Respuesta :
The answer is (C) because a dam doesn’t have anything to do with air so eliminate (A). Reduce means decrease or lower but a dam is groundwater so eliminate (B). It is changing the river ecosystem because otters build them and they aren’t naturally made so (C) is correct. And you can also eliminate (D) because the oxygen level doesn’t lower simply because otters move and block off water ways to make their home.
c. It causes changes in the river ecosystem.
this is the best option to describe the impact of a dam on the environment
what is hydroelectric power?
Hydropower, or hydroelectric power, is one of the oldest and largest sources of renewable energy, which uses the natural flow of moving water to generate electricity
What is geothermal energy?
Geothermal energy is a type of renewable energy taken from the Earth's core. It comes from the heat generated during the original formation of the planet and the radioactive decay of materials. This thermal energy is stored in rocks and fluids in the center of the earth.
Learn more about hydroelectric power here
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