Examples of environmental technology and good and bad impacts

Enviromental technology can be listed from simple objects to a large company.

1.Enviromental Technology:
Wood farming (its not that of a technology, but the amount technology to do this is large)
2.Coal Mining
3. Water damps (for making electricity)

alright.. good:
1. other objects can be created thanks to this
2. The final product can be used as a source of energy.
3. Electricity!!

the bad.
1. mass-cutting trees... :(
2. Often makes no to some pollution, can have pernament effect on the workers life (respiratory problems etc.)
3. Can cause floods..

Exactly what he said he smart