| A | B |
|---|
| Biodiversity | Variety of life in an ecosystem |
| Acid rain | forms when pollutants from cars and industries mix with water in the air |
| Captive population | population of organisms that is cared for by humans |
| Conservation Biology | study of methods for protecting Earth's biodiversity |
| Endangered Species | species that is in danger of becoming extinct |
| Extinct Species | species that was once present on Earth but has died out |
| Habitat Restoration | process of bringing back a damaged habitat to a healthy state |
| Introduced Species | species that moved into an ecosystem as a result of human actions |
| Native Species | original organisms in an ecosytem |
| Ozone Depletion | thinning of the Earth's ozone layer caused by CFCs |
| reintroduction programs | strategy that returns an organism to an area where the species once lived |
| Threatened Species | species that is likely to become endangered in the near future |
| Invasive Species | an introduced species that causes harm |
| wildlife corridors | used to link small parks together so animals can move from one to another |
| U.S. Endangered Species Act of 1973 | makes it illegal to harm, collect, harass, or disturb the habitat of endangered or threatened species |
| seed bank | a bank of seeds that can be used if a species became extinct |
| Purple loosestrife | invasive species in Maine |
| biosphere | part of the Earth that supports life |
| Global Warming | average temperature rise causing the climate to change |
| pollution | land, air or water that is contaminated with oil or chemicals |
