| A | B |
|---|
| agriculture | the practice of farming. |
| monoculture | farmers plant a single variety of plant every year in the same field. |
| green revolution | efforts by the government and science to increase the world's food supply. |
| renewable resource | can be regenerated or replenished |
| nonrenewable resource | cannot be replenished by natural processes. |
| soil erosion | wearing away of surface soil by water and/or wind. |
| desertification | turning once productive areas into deserts by farming, overgrazing, and drought. |
| biodiversity | the variety of lifeforms in an area |
| species diversity | measurement of biodiversity using species richness and evenness |
| genetic diversity | amount of genetic variation in an area |
| pollution | substances that cause unintended harm into air, water, or soil |
| smog | water vapor mixed with chemicals from human activities in our atmosphere |
| chlorofluorocarbons (CFCs) | compounds from refrigerants/coolants/aerosol spray cans that thin the ozone layer |
| biological magnification | where chemicals in ecosystem become more concentrated in organisms higher on food chain |
| acid rain | rain, snow, etc that has become acidic due to sulfur compounds from industry |
| extinction | the death of every member of a species |
| aquaculture | the raising of aquatic animals for human consumption. |
| sustainability | the ability to meet human needs in such a way that human pop can survive indefinitely |
| conservation | where scientists seek to identify, protect, and manage biodiverse areas |
| ecosystem diversity | the varieties of habitats, communities, and ecological processes in the living world. |
| invasive species | whether accidentally or purposely, these are species introduced to new habitats, reproduce rapidly, and have no real predators. |
| habitat fragmentation | when an ecosystem is split into pieces. |
| endangered species | a species whose population is declining and in danger of becoming extinct. |
| deforestation | loss of forests...logging, erosion, grazing, plowing, clear-cutting, etc. |
| ozone layer | layer high in the atmosphere with a high level of the gas ozone (O3). |
| global warming | the increase in average temperature of the biosphere. |
