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consits of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere;
the whole entire Earth |
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| a group of similar organisms that can breed and produce fertile offspring. |
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| a group of individals that belong to the same species and live in the same area. |
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| an assemblage of different populations that live together in a defined area |
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| study of biotic and abiotic factor interact with eachother. |
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| all the organsims that live in a place, together wit their physcial environment |
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| a group of ecosystems that share similar climates and typical organisms. |
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| any living part of the environment with which an organism might interact, including animals, plants, mushrooms, and bacteria. |
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| any nonliving part of the environment, such as sunlight, heat, precipitation, humidity, wind or water currents, soil type, and so on. |
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| organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer |
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| first producer of energy-rich compounds that are later used by other organisms. |
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| process used by plants and other autorophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches. |
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| process in which chemical energy is used to producecarbohydrates |
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| organism that obtains food by consuming other living things; also called a consumer |
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| organism that relies on other organisms for its energy and food subbly also called a hererotroph |
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| organism that obtains energy by eating animals |
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| organims that obtains energy by eating only plants |
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| animal that consumes the carcasses of other animals |
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| organism that obtains energy by eating both plants and animals |
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| organism that breaks down and obtains energy from dead organic matter |
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| organism that feeds on detrius particles |
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| process in which elements, chemical compounds, and other foms of matter are passed from one organism to another and from one part of the biosphere to another |
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| chemical substance that an organism needs to sustain life |
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| when nitrogen gas has hydrogen attatched to it to become amonia or amonium. |
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| process by which bacteria convert nitrates into nitrogen gas |
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| single essentrial nutrient that limits productivity in an ecosystem |
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| series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
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| algea near surface of water that takes sunlight and grows algea. producer |
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| network of complex interactions formed by the feeding relationships amng the various organisms in an ecosystem |
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| small animal that eats algea. base of food chain. very small organism. herbivore. |
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| each step in a food chain or food web |
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| illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web |
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| total amount of living tissue witin a given trophic level |
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