| A | B |
|---|
| Biomass | Plant materials and animal waste used as fuel |
| commerical farming | large farms that rely on technology and require fewer workers but produce lots of food |
| Conservation | The preservation and careful management of the environment and of natural resources |
| developed nations | countries that have many industries |
| developing nations | countries with few industres |
| Electricity | Energy made available by the flow of electric charge through a conductor |
| Fossil fuels | A hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel. |
| Geothermal Energy | Energy generated by heat from inside the earth |
| Global warming | An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes) |
| Hydroelectric power | Electricity produced by moving water. |
| manufacturing | a product is processed and changed from a raw material into a finished product |
| Natural gas | A mixture of hydrocarbon gases that occur with petroleum deposits |
| natural resource | useful material found in the environment |
| Nonrenewable resources | Resources such as fossil fuels, that are used up and cannot be replaced or made again in one life time. |
| Nuclear Energy | An alternative source of energy that comes from the nuclei of atoms. |
| plantations | a large, usually one-crop farm with many workers living on it ; common int he Southern US before the Civil War. pp. 115, 164 |
| Propane | A colorless, flammable gas, C3H8, occurring in petroleum and natural gas: used chiefly as a fuel and in organic synthesis. |
| raw materials | resources that must be altered or changed before they can be used |
| recyclable resources | water is one resource that cycles through the environment |
| Renewable resources | a resource that cannot be used up or can be replaced naturally (sun, water, forests) |
| Solar energy | Energy from the sun that is converted into thermal or electrical energy |
| subsistence farming | farmers raise enough food and animals to feed their own families |
| Uranium | A heavy toxic silvery-white radioactive metallic element |
| Wind power | Electricity generated by he movement of air |
