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13 cards from this deck
Renewable energy resources from organic materials (plants/animal waste)
Solid, liquid, gaseous
Wood, straw, dried manure
Ethanol, biodiesel
Biogas
Fermenting sugars from crops (corn, sugarcane, wheat)
Processing vegetable oils or animal fats
Bacteria break down organic matter without oxygen (anaerobic)
Mixed with petrol to power cars
Can be replenished quickly, unlike fossil fuels (millions of years)
CO2CO_2CO2 released = amount absorbed by plants during growth
Takes land from food, raises prices, causes deforestation
Growing crops uses lots of water, problems in dry areas
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