| A | B |
|---|
| carrying capacity | the largest population of any single species that an area can support |
| deforestation | forest destruction that results from human activity |
| direct harvesting | the destruction of an organism, or the removal of an organism from its habitat |
| energy flow | the movement of energy through an ecosystem |
| fossil fuel | a fuel (oil, coal, natural gas) that comes from the decayed remains of organisms that lived millions of years ago |
| global warming | an increase in Earth's average surface temperature caused by an increase in greenhouse gases |
| industrialization | the process of converting an economy into one in which large-scale manufacturing is the primary economic base |
| nonrenewable resource | any resource, such as fossil fuels and minerals, that cannot be replaced |
| nuclear fuel | an energy source that results from splitting atoms (fission) |
| ozone shield | the layer of ozone gas in the upper atmosphere that protects Earth from some of the sun's radiation |
| pollution | a harmful change in the chemical makeup of the soil, water, or air |
| renewable resources | Earth's resources, such as our food supply and solar energy, which given time, can be replaced |
| technology | all of the practical scientific knowledge that has been used to meet human needs |
| trade-off | an exchange or agreement made to reach a compromise |
| water cycle | the process by which water continuously moves from Earth's surface the the atmosphere and back |
| decay | to break down |
| greenhouse effect | the trapping of heat by gases in the atmosphere |
| greenhouse gas | an atmospheric gas that traps heat (ex. carbon dioxide) |
