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Chapter 6
Chapter 6 flashcards
| Question | Answer |
|---|---|
| Subsistence Hunting | -Hunting only to acquire the basic necessities for survival. |
| Agriculture | -The practice of farming. |
| Green Revolution | -Introduction of intensive farming practices that lead to a substantial increase in crop yields. |
| Monoculture | -Farming strategy in which large fields are cleared, plowed, and planted with a single,highly productive crop year after year. |
| Renewable Resource | -Can regenerate and are therefore replaceable. |
| Nonrenewable Resource | -One that cannot be replenished by natural processes. |
| Sustainable Use | -A way of using natural resources at a rate that doesn't deplete them. |
| Soil Erosion | -The wearing away of surface soil by water and wind. |
| Desertification | -In areas with dry climates, a combination of farming, overgrazing, and drought has turned once productive areas into deserts. |
| Deforestation | -Loss of forests. |
| Aquaculture | -The farming of aquatic organisms. |
| Smog | -A mixture of chemicals that occurs as a gray-brown haze in the atmosphere. |
| Pollutant | -A harmful material that can enter the biosphere through the land, air, or water. |
| Acid Rain | -Rain containing nitric and sulfuric acids. |
| Biodiversity | -The sum total of the genetically based variety of all organisms in the biosphere. |
| Ecosystem Diversity | -Includes the variety of habitats, communities, and ecological processes in the living world. |
| Species Diversity | -The number of different species in the biosphere. |
| Genetic Diversity | -The sum total of all the different forms of genetic information carried by all organisms living on Earth today. |
| Extinction | -Occurs when a species from all or part of its range. |
| Endangered Species | -A species whose population size is declining in a way that places it in danger of extinction. |
| Habitat Fragmentation | -A process in which an ecosystem is split into pieces. |
| Biological Magnification | -Concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or food web. |
| Invasive Species | -Plants and animals that have migrated to places where they are not native. |
| Conservation | -Describes the wise management of natural resources, including the preservation of habitats and wildlife. |
| Ozone Layer | -A concentration of ozone gases above Earth's atmosphere between 20 and 50 kilometers. |
| Global Warming | -Term describing the increase in temperature of the biosphere. |
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jhaney
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