the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen

an organism that can make organic molecules from inorganic molecules; a photosynthetic or chemosynthetic autotroph that serves as the basic food source in an ecosystem

an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources

an organism that feeds by breaking down organic matter from dead organisms; examples include bacteria and fungi

the process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide

the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms

a diagram that shows the feeding relationships between organisms in an ecosystem

one of the steps in a food chain or food pyramid; examples include producers and primary, secondary, and tertiary consumers

the movement of carbon from the nonliving environment into living things and back

nitrogen-fixing bacteria

bacteria that convert atmospheric nitrogen into ammonia

the process in which nitrogen circulates among the air, soil, water, plants, and animals in an ecosystem

the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment

ecological succession

a calculation that shows the productive area of Earth needed to support one person in a particular country

succession that begins in an area that previously did not support life.

the process by which one community replaces another community that has been partially or totally destroyed

a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established

a final, stable community in equilibrium with the environment

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ES ch.5

Term	Definition
photosynthesis	the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen
producer	an organism that can make organic molecules from inorganic molecules; a photosynthetic or chemosynthetic autotroph that serves as the basic food source in an ecosystem
consumer	an organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources
decomposer	an organism that feeds by breaking down organic matter from dead organisms; examples include bacteria and fungi
cellular respiration	the process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide
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 in an ecosystem
trophic level	one of the steps in a food chain or food pyramid; examples include producers and primary, secondary, and tertiary consumers
carbon cycle	the 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 the 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 to the environment
ecological succession	a calculation that shows the productive area of Earth needed to support one person in a particular country
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 has been partially or totally destroyed
pioneer species	a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established
climax community	a final, stable community in equilibrium with the environment

Created by: chloeshaver

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