| A | B |
|---|
| global warming | increase in temperature due to the greenhouse effect |
| industrialization | an economy in which machines produce most products |
| nonrenewable resource | resources that cannot be replaced, such as fossil fuels and minerals |
| nuclear fuel | an energy source that results from splitting atoms |
| ozone shield | atmosphere layer that protects the earth from excessive ultraviolet radiation |
| pollution | harmful change in the chemical makeup of soil, water, or air |
| renewable resource | resources that can be replaced, such as food and solar energy |
| trade-off | compromise |
| water cycle | process by which water continually moves from Earth's surface to the atmosphere |
| finite | limited; not infinite |
| fossil fuel | coal, gas, oil |
| depletion | serious reduction; running out of |
| detrimental | damaging |
| smog | a type of air pollution in large cities that looks like smoky fog |
| sustainable | a method of harvesting or using a resource so that the resource is not depleted or permanently damaged |
| acid rain | sulfur and nitrogen compounds produced by burning fossil fuels that combine with moisture in the atmosphere |
| carrying capacity | the number of individuals of a species the environment can support |
| deforestation | the destruction of forests resulting from human activity |
| direct harvesting | the destruction or removal of species from their habitats |
| energy flow | movement of energy through organisms in an ecosystem |
| invasive species | species that are not native to an ecosystem that causes harm to the ecosystem |
| quarantine | confined isolation to prevent spread of disease |
| greenhouse effect | atmospheric gases trap and absorb the infrared radiation that bounces off Earth's warmed surface |
| carbon dioxide | a major greenhouse gas |
