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| contains combined portions of the planet in which all life exist |
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| group of indivuals who belong to the same species in the same area |
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| a collection of all the orginazims that live in the same place. |
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| diffrent populations that live togther. |
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| a group of ecosystems that live in the same climate and simler domaint communities |
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| turning sunlight into chemical power |
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| when orginisiams use chemical energy to produce carbs |
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| eat both plants and animals |
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| eat dead plant and animal remains |
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| a series of steps in which a orginasim transfers energy be eating or being eaten |
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| links all food chains in ecosystem together. |
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| each step in a food chain or web |
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| a diogram that shows the relative amount of energy or matter contained withen each trophic level in a food chain or web. |
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| total amount of living tissue within a given trophic level. |
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| elements, chemical compounds and other forms of matter are passed from one orginasim to another and from one part of the biosphere to another |
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| prosscess from which water from a liguid to a atmospheric gas. |
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| water entring atmosphere by evaporation from the leaves of plants. |
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| all the chemical substance that an orginism needs to sustain life. |
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| bactirea that lives on the soil and on the roots of plants calle legumes, convert nitrogen gas into ammonia |
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| other soil bactiria convert nitrates into nitrogen gas |
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| rate of creation by organic matter |
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| when a ecosystem is limited by not having enough of a product |
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| reciving large input of a limiting nutrient. |
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| wetlands formed where rivers meet the sea. |
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| number of indivaduals per unit area. |
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| occurs when species reproduce in mass numbers. |
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| population growth slowes or stops. |
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| limit on how many of a species can be in a particular area. |
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| eaiting of animals that are below you on the food chain. |
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| limiting growth on a population |
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| affects all populations in similar ways. |
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| a dramatic change in birth or death rates. |
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| examines the characteristics of a human populations will change over time. |
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| can regenrate the resource |
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| gas, cant be replenished. |
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| using natural resources without devlopment |
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| wearing away of a surface. |
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| dry climates over a long period of time |
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| harmful material that can enter the biosphere |
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| a gray-brown haze in the atmosphere |
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