[fastasucan]

Human made dams are not always comparable with bever dams, to say the least. The wildlife have learned to coexist with beavers. Human dams on the other hand can be a lot larger, not allow for emigration, drain large areas and van themselves be drained.

[b112]

So, lakes are bad? Nothing lives in, around, or on lakes, right?

I am responding simplistically, because truthfully, it is simple. Dams replace one healthy, vibrant ecosystem with another.