yes
more.
anything out of normal in an animals environment will cause physical or behavioral changes in them. A drought for instance will cause many animals to die and bring out competitive...
Any manufacturing process tends to be detrimental in some way. In energy terms the cells pay for themselves relatively quickly (between 2-4 years now), but there are other environmental costs...
Fossil fuels are oil and coal. Both of which have to extracted from the earth through drill of wells or by digging of mines. The burning of these fuels pollutes the atmosphere.