Science-Gr 7

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mutualism

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a symbiotic relationship between two different types of organisms that is beneficial to both organisms

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photosynthesis

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the process by which plants make their own food using sunlight

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decomposer

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oranisms that break down cells of dead or waste materials and absorb their nutrients; many bacteria and fungi are decomposers

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parasitism

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a symbiotic relationship between two different types of organisms in which one of the partners is harmed and the other benefits

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symbiosis

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an interaction between organisms of different species living in close proximity to each other in a relationship that lasts over time

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population

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a group of organisms ofo the same species found in a particular geographic area

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omnivores

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an animal that eats other animals and plant material; example are bear, raccoon, people

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organism

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any type of liiving creature

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consumer

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organisms that eat the food made by producers; can be either herbivores, carnivores, or omnivores

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community

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an association of different populations of organisms in particular enviroment or geographic area

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nutrient

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component of food that supplies energy or building material to a living thing

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biome

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a region of land that contains certain kinds of organisms, particulary plants; dtermined by climate; examples desert, grassland, and forest

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biotic

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a term applied to living things in the enviroment, such as humans, plants, birds, animals and insects

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abiotic

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a term applied to nonliving things in the enviroment for example, air, water, and soil

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commensalisms

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a symbiotic relationship between two different types of organisms in which one partner benefits nor loses

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carnivores

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an animal that eats other animals; examples are lynx, wolf, hawk

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food chain

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a sequence of feeding relationships among living organisms, as they pass on food energy

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bioaccumulation

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movement of pollutants through levels of food chain so greater quantities are retained with movement up the food chain

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heribivores

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an animal that eats only plant material; example are grasshopper, beaver, and moose

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bioshere

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the thin area around earth that can sustain life, made up of the atmosphere, the hydrosphere, and the lithosphere

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pesticides

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a subtance used to control insects or other organisms that are harmful to plants or animals

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ecosystem

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all interacting parts of biological community and its enviroment

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producer

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plants that use energy from the sun to make nutrients they need to survive; includes some bacteria that transfer energy from particles

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scavenger

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an organism that eats dead or decaying plant or animal matter; a carrion beetle is an example of a scavenger