Sustainability Vocabulary Definitions

I need the sustainability definition of each word and 2 pros and cons for each

1- Net Energy

2- Energy Conservation

3- Co-Generation

4- Crude Oil

5- Shale Oil

6- Natural Gas

7- Coal

8- Nuclear Fusion

9- Solar Cells

10- Hydropower 

11- Wind Power

12- Biomass

13- Ethanol

14- Geothermal

15- Hydrogen