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| the study of interactions that take place between organisms and there envirenment. |
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| the most inclusive level. The portion of the earth that supports life. Life found everywhere air, land and in water. |
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| smaller portion of the biosphere . Popof plant and animals that inteact with eachother in a given area. |
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| a group of organisms. All the same species. |
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| all the living organisms in an envirnment |
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| all th non-living organisms in an envirnment |
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| a graph used to show the organisms performences verses any given factory |
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| some organisms can adjust there body to abiotic factors. |
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| a moodle of population growth in which the birth and death rates are constant |
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| a modle in which birth and death rates very with population size are equal at carring capacity |
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| the relation test between different species living in a close associtaion of eachother. |
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parasite that feeds on host
not intead to kill species |
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| a form of symbiosis which both organisms benefit fromliving together |
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| one organism benifets and the other is not affected |
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| predicitable odvious changes in an enviorenment of populations n an ecosystems |
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| the number of individuals of species that an ecosystem is capable of supporting |
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| the number of individuals of species that an ecosystem is capable of supporting |
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| organisms that can produce its own food supply. |
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| the process a plant uses to combine sunlight, water, and carbon dioxide to produce oxygen and sugar (energy). |
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| Organisms that cannot make there own food supply |
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| plant eaters. Only eat plants |
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| Meat eaters. Only eat meat |
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| Meat and plant eaters. Eat both |
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| Recycle nutrients back into ecosystem |
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| Each level in a food chain or a food web |
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| Transfer of energy from sun to producer to primary consumer; to higher order consumers |
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| - Interconnected food chains. They show feeding relationships in an ecosystem |
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| Movement of water from atmosphere to earth and then back to atmosphere |
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| The processes of water loss from plant stomata |
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1. carbon
2. resperaton
3. decompositon
4. photocynthesies |
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| The circulation of nitrogen in nature |
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| what is the most significate environmentatal change that is taken place today? |
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| the exploding human population |
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| what is the sixth mass extinction? |
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| that majority of the species on the earth will disapear |
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| name the 5 levels of ecology |
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Definition
biosphere
ecosystem
community
population
organism |
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| all the universe and earth |
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| whats an example of an ecosystem? |
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| all the populations in one area |
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what is the simplest ecological level?
give an example |
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| why are models so usefull? |
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| because ecosystems are so complex. |
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| are biotic fators constant? give an example |
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Definition
| no tempatures chane frequently |
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| what will happen to your body if you stay at high elevation for a long time? |
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Definition
you will gain red blood cells.
this is called succession |
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| what is it ment by population size? |
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Definition
| a measure of how crowded of how crowded a population is |
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| what is population densisty? |
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| how big a population is in a given area |
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| what are the four reasons populations grow and decline? |
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death rate
birthrate
immigration
emmigration |
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| what are examles of limiting factors? |
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Definition
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| all hetertrophs would be____? |
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| Whenever one organism eats another _____is transfered |
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| how many tropic levels do most ecosystems contain? |
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| what always begins a food chain? |
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| what is an example of a food chain? |
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| ampoxemently what percent of the total energy consumed at one at one tropic level makes it to the next level? |
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| carbon nitrogen and water cycle |
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| 3 important processes in a water cycle |
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| evaporatoion, condensation and transpiration |
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| 2 processes that form the baises of the carbon cycle |
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| photosythesis and cellular respiration |
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