1. Non-renewable Sources of Energy
1. Oil
2. Natural gas
3. Nuclear

2. Renewable Sources of Energy
4. Hydro-electric
5. Solar
6. Wind
7. Biomass
8. Geothermal

3. How Energy is Consumed in Agriculture
Gas and diesel:
Fuel for farm power and transportation.
Electricity:
Used for pumping irrigation water, processing, and refrigeration.
Natural gas:
Used for producing fertilizer, heating greenhouses, and processing food products.

4. Alternative Energy Sources in Agriculture
Biomass: Wood, crop stubble, etc. used to produce heat, methane gas, or fuel alcohol.
Fuel Alcohol: Corn, sugar cane, etc. processed & fermented to provide ethanol.
Methane gas: Captured from decomposing manure or crop residue & used to run machinery, heat water
Solar & wind: Captured and turned into usable energy to run equipment.