Term
| Predators can affect the size of ___ ____ in a ccommunity and determine the ___ ___ __ __ and ___ |
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Definition
| prey populations; places prey can live, feed |
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Term
| Herbivores can affect both the __ and ___ of ___ ___ in a community and determine the places that certain ___ __ ___ and ___ |
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Definition
| size, distribution, plant populations, plants can survive, grow |
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Term
| Biologists recognize 3 main classes of symbiotic relationships in nature: |
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Definition
| mutualism, parasitism, and commensalism |
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Term
| A niche is the range of ____ and ___ ____ in which a species ____ and the way the species obtains what it needs to ___ and ___. |
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Definition
| physical, biological conditions, live, survive, reproduce. |
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Term
| mercury in water, intensifies environment |
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Definition
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Term
| avg. yr.-to-yr. conditions of temp. and precipitation in an area over a long period of time |
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Definition
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Term
| symbiotic relationship in which one organism benefits and the other is neither helped nor harmed |
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Definition
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Term
| relationship in which two species live close together |
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Definition
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Term
| partially covered by water |
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Definition
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Term
| who made basic rules of population |
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Definition
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Term
| interaction in which one animal (herbivore) feeds on producers (such as plants) |
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Definition
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Term
| single species that is not usually abindant in a community yet exterts strong control on the structure of a community |
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Definition
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Term
| symbiotic relationship in which both species benefit from the relationship |
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Definition
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Term
| full range of physical and biological condition in which an organism lives and the way in which the orgainsm uses those conditions |
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Definition
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Term
| symbiotic relationship in which one organism lives on another and harms it |
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Definition
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Term
| interaction in which one organism (the predator) captures and feeds on another organism (the prey) |
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Definition
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Term
| any necessity of life, such as water, nutrients, light, food, or space |
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Definition
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Term
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Definition
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Term
| flow of energy through food chains |
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Definition
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Term
| physical, or nonliving. factor that shapes an ecosystem |
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Definition
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Term
| a group of ecosystems that share similar climates and typical organisms |
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Definition
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Term
| part of earth in which life exists including land, water, and air or atmosphere |
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Definition
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Term
| any living part of the environment which an organism might interact |
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Definition
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Term
| organism that obtains energy by eating animals |
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Definition
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Term
| assemblage of different populations live together in a defined area |
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Definition
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Term
| organism that relies on other organisms for its energy and food supply; heterotroph |
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Definition
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Term
| orgainism that feeds on plant and animal remains and other dead matter |
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Definition
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Term
| scientific study of interactions among organisms and between organisms and their environmern |
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Definition
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Term
| all the organism that live in a place, together with their nonliving environment |
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Definition
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Term
| organisms that obtains energy by eating only plants |
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Definition
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Term
| organism that obtains food by consuming other living things |
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Definition
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Term
| organism that obtains energy by eating both plants and animals |
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Definition
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Term
| first producer of energy-rich compounds that are later used by other organisms |
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Definition
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Term
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Definition
| mortality (death) nutality (birth)Immigration Emmigration |
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Term
| animal that consumes carcasses of other animals |
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Definition
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Term
| a group of similar organism that can breed and produce fertile offspring |
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Definition
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Term
| total amt. of living tissue within a given tropthic lvl |
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Definition
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Term
| process by which bacteria convert nitrates into nitrogen gas |
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Definition
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Term
| series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
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Definition
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Term
| when a community gradually changes |
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Definition
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