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ch 5 enviro sci

QuestionAnswer
photosynthesis the process by which plants, algae, and some bacteria uses sunlight, carbon dioxide, and water to produce carbohydrates and oxygen
producer an organism that can make organic molecules from inorganic molecules
consumer an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic
decomposer an organism that feeds by breaking down organic matter from dead organisms
cellular respiration the process by which cells produce energy from carbohydrates
food chain the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms
food web a diagram that shows the feeding relationships between organisms
tropic level one of the steps in a food chain or food pyramid.
carbon cycle a movement of carbon from the nonliving environment into living things and back
nitrogen-fixing bacteria bacteria that convert atmospheric nitrogen into ammonia
nitrogen cycle the process in which nitrogen circulates among air, soil, water, plants, and animals in an ecosystem
phosphorus cycle the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back into the environment
ecological succession a gradual process of change and replacement in a community
primary succession succession that begins in an area that previously did not support life
secondary succession the process by which one community replaces another community that ha been partially or totally destroyed
pioneer species a species that colonizes an uninhabited area and that starts and ecological cycle in which many other species become establish
climax community a final, stable community in equilibrium with the environment
Created by: dylan12378
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