2006-11-19 00:14:08 · 4 answers · asked by luis 1 in Science & Mathematics ➔ Physics
Depends on which one. The positive effects are well enough known and obvious. As for negative effects: Dams silt up rivers and encumber salmon migration, wind mills kill birds, solar consumes habitat, corn based ethanol uses at least a comparable amount of fossil fuel energy to produce, and all depend on infrastructure that, to varying degrees, depend on consuming nonrenewable resources like steel, aluminum, oil (to make plastic), etc. Nobody said it would be easy.
2006-11-19 06:21:14 · answer #1 · answered by Dr. R 7 · 0⤊ 0⤋
I'm assuming you know the pros so I'll list some of the cons that I've heard...
Hydro-Electric: You have to damn up rivers which changes everything downstream and floods areas upstream.
Wind Power Farms: Changies the local habitat due construction and changing the wind patterns, kills birds
Bio-Fuels: takes energy to harvest and convert to fuels, hazardous waste products (???), need to use fertilizers for the crop
2006-11-19 08:27:19 · answer #2 · answered by lots_of_laughs 6 · 0⤊ 0⤋
It depends on the renewable technology.
But they are all better than anihilation from global warming.
2006-11-19 08:23:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
well,it helps to stop exploitation of natural resources
2006-11-19 08:17:12 · answer #4 · answered by The Potter Boy 3 · 0⤊ 0⤋