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Scientific study of interactions among organisms and between organisms and their environment
Collection of all the organisms that live in a particular place, together with their nonliving environment
organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
organism that relies on other organisms for its energy and food supply; also called a heterotroph
network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web
single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem
an immediate increase in the amount of algae and other producers that results from a large input of a limiting nutrient
the scientific discipline in which the relationships among living organisms and the interactions the organisms have with their environments are studied
individual organisms of a single species that share the same geographic location at the same time
a group of interacting populations that occupy the same geographic area at the same time
a relationship between two or more organisms that live closely together and benefit from each other
an organism which eat fragments of dead matter in an ecosystem and returns nutrients to the environment
a model representing the many interconnected food chains and pathyways in which energy flows through a group of organisms
the process of capturing and converting nitrogen into a form that is usable by plants
a diagram that shows the amount of energy that moves from one feeding level to another in a food web
the place where an organism lives and that provides the things it needs; (food, water, shelter, etc)
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