Does hydro have drawbacks? Yes. They change ecosystems. In many cases the new ecosystems are less desirable from the human perspective, but the reservoirs and r

Does hydro have drawbacks? Yes. They change ecosystems. In many cases the new ecosystems are less desirable from the human perspective, but the reservoirs and rivers that are changed are still plenty viable for all sorts of ecosystems and life. This is highly different from fossil fuels, which produce pollution, toxins, and directly contribute to all of the evils of climate change.