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Definition
| Group of individuals that belong to the same species, live in the same area, and breed with others in the group. |
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| The rate at which people are born |
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| The rate at which people die. |
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| Population size that an environment can sustain. |
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Term
| Density Dependent Factors |
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Definition
| Factors, such as climate, that affect the growth of populations. These factors are unaffected by the density of populations. |
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Definition
| Major type of terrestrial ecological community, such as a grassland or a dessert. |
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| The prevailing weather conditions in a givein area. |
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Definition
| Many species are found here, about half the Earth's speices. Rainfall has generally 200-450cm (80-180 in.) |
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Definition
| Typically less that 25cm (10in) of precipitation fall anunally. Water is very scarce. |
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Definition
| A great, dry, grassland. A transitional zone located between tropical rainforests and deserts. |
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| Temperate Deciduous Forests |
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Definition
| Relativly mild climates and plentiful rain promotes. The trees shed their leaves all at onece in the fall, they grow in relatively warm summers, cold winters, and sufficient precipitation. |
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Definition
| Moderate climates halfway between the equater. The roots of grasses characteritically penetrate farther into the soil which tends to be deep and fertile. |
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| Cold wet climates promote the growth of coniferous forests. Winters here tend to be long and cold and most of the precipiatation falls in the summer. Many large animals live here. |
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Term
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Definition
| Between the taiga and the permanent ice surrounding the North Pole is this open, sometimes, boggy biome. It cover 1/5 of the Earth. Precipitation is very low less than 25cm or 10 in. |
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Definition
| Precipitation with below normal-pH, often the result of industrial polluion and autombile exhaust |
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Definition
| Lakes, ponds, streams and rivers. These are strongly connected to terrestrial ones, with marshes and wetlands constituting intermediate habitats. |
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Definition
| Covers nearly three-fourths the Earth's surface. They are cold and dark. It consiststs of three major habitats, the shallow ocean waters along the couasts, the srface of the open sea, and the dpthst of the open ocean. |
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Definition
| Transition zones vetween marine and freshwater environments. It filters sediment and nutrientspurifying the water that drains off the land. |
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Definition
| Dirty brown haze that contains harmful pollutants. It is trapped by the warm air. |
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Definition
| When the death rate equals the birth rate. When the growth rate is zero. |
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| An increase in the average temperature of the earth's atmosphere, especially a sustained increase sufficient to cause climatic change due to increase of carbon dioxide in the atmosphere. |
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Definition
| The warming of the atmosphere that results from greenhouse gases. |
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Definition
| Holes in the ozone. Ozone (03) protects Earth from harmful UV rays. Chlourofluorocarbons (CFC's) bind to one of the oxygen molecules. |
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Definition
| Process by which molecules passing upward through the trophic food chain become increasingly concentrated. |
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Term
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Definition
| What does the ozone protect us from? |
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Term
| An increased incidence of diseases caused by exposure to utraviolet radiation. |
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Definition
| What could result from ozone depletion? |
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Term
| Chlorofluorocarbons (CFC's) |
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Definition
| What chemical causes the depletion of the ozone layer? |
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Term
| Sulfur combining with water vapor to make sulfuric acid. |
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Definition
| What are the ingredients of acid rain? |
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Term
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Definition
| What element is released through tall smoke stackss when burning coal? |
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Term
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Definition
| What molecule is responsible for global warming? |
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Term
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Definition
| What are the two most important parts of climate? |
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Term
| Increased birth rate and decreased death rate. |
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Definition
| What factors contrbuite to an increased world population? |
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Term
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Definition
| Where is human population growth most rapid? |
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Term
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Definition
| S-shaped curve,shows growth limited due to density dependent factors. |
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Term
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Definition
| J-shaped curve, show rapid growth and has no density dependent factors. |
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