| A | B |
|---|
| limiting factor | a resource or environmental condition that restricts the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem. |
| biomass | organic matter, such as plants or garbage, that can be used as an energy source |
| coal | a natural dark brown to black soft rock used as a fuel that was formed from fossilized plants that is burned in large power plants to create electricity |
| energy | the ability to do work |
| energy efficiency | using less energy to perform the same function; not wasting |
| fossil fuel | naturally occurring carbon or hydrocarbon fuel (e.g. coal, natural gas and oil), formed by the decomposition of pre-historic organisms |
| natural gas | the other fossil fuel that is made from the decay of plants and animals over millions of years; we mainly use methane |
| georthermal | natural steam or hot water trapped below the surface of the earth's crust |
| hydroelectric | electricity produced from moving water |
| non-renewable | something that has a limited supply that can not be replaced nor replenished |
| petroleum | a fossil fuel, it is often called crude oil, or just oil. |
| renewable energy | forms of energy that can be quickly replenished |
| solar | relating to the sun |
| sustainable | able to supply our needs today without harming future generation’s needs |
| thermal | using or producing heat |
| energy | the ability to do work |
| abiotic | not living |
| biotic | living |
| natural resource | something found in the environment that is useful for humans and often used to make another product |
| produced resource | a man-made resource |
