AP Biology Ecological Relationships Flashcards
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| 7396158578 | Biodiversity | the number of different species an area contains combined with the abundance of individuals within each of those species |  | 0 |
| 7396164246 | Species Richness | the number of different species an area contains |  | 1 |
| 7396168188 | Species Evenness | the abundance of individuals within each of those species. |  | 2 |
| 7396183077 | Endemic species | Species naturally unique to a specific area |  | 3 |
| 7396191249 | Range | The entire area that a plant, animal, insect or other organism travels during its lifetime. |  | 4 |
| 7396197915 | bioinvasion | The introduction of species, by direct or indirect human actions, to areas where they did not previously exist. |  | 5 |
| 7396208320 | Non-native species | Species introduced to areas beyond their historic natural range. |  | 6 |
| 7396222078 | What are the worst threats to endangered species & biodiversity? | Habitat destruction by human activities Invasive species | 7 | |
| 7396229447 | When non-indigenous species immigrate to another country: | They leave their natural enemies behind such as predators, parasites, and disease. | 8 | |
| 7396238362 | endangered species | An organism whose chances of survival & reproduction are in immediate jeopardy. |  | 9 |
| 7396242423 | threatened species | An organism that is likely to become endangered. |  | 10 |
| 7396244327 | extinct | Disappeared from the Earth. |  | 11 |
| 7396248159 | Global Extinction | Extinction occurs when the population cannot adapt to changing environmental conditions. |  | 12 |
| 7396265858 | Endangered Species Act of 1973: | Requires the U.S. Dept. of the Interior to identify & protect species that are in danger of extinction. |  | 13 |
| 7396284457 | poaching | The taking of a species by any illegal means; illegal hunting. |  | 14 |
| 7396289914 | habitat fragmentation: | When breeding is limited to a small group, young are born w/birth defects & mutations, reducing their survival rate. |  | 15 |
| 7396295491 | Hotspots | An ecological region that has lost more than 70% of its original habitat | 16 | |
| 7396305516 | What happened to the Dodo bird? | Had no predators in Australia so it lost its ability to fly over time | 17 | |
| 7396311321 | DDT | Dichloro-diphenyl-trichloroetha ne; the first chlorinated hydrocarbon used as an insecticide (kills bugs). |  | 18 |
| 7396320112 | Monocultures | low genetic variety—not resistant to pests, disease, etc. |  | 19 |
| 7396329748 | Benefits of seeds from plants growing in the wild: | improve plant yield—higher productivity—more biomass. make them more resistant to drought, disease, &/or insect damage. | 20 | |
| 7396344720 | keystone species | Organisms that play an important role in stabilizing an ecosystem; keep ecosystem in balance. |  | 21 |
| 7396352708 | indicator species | species that are used to measure the health of an ecosystem. Frogs are an example |  | 22 |