the scientific study of interactions among organisms and between organisms and their environment

part of Earth in which life exists including land, water, and air or atmosphere

a group of organisms so similar to one another that they can breed and produce fertile offspring

groups of individuals that belong to the same species and live in the same area

groups of different populations that live together in a defined area

collection of all the organisms that live in a particular place, together with their nonliving environment

a group of ecosystems that have the same climate and similar dominant communites

organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds

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

organism that obtains energy from the foods it consumes

organism that relies on other organisms for its energy and food supply; heterotroph

organism that obtains energy by eating only plants

organism that obtains energy by eating animals

organism that obtains energy by eating both plants and animals

organism that feeds on plant and animal remains and other dead matter

organism that breaks down and obtains energy from dead organic matter

series of steps in an ecosystem in which organisms transfer energy by eating and being eaten

network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem

step in a food chain or food web

diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web

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Ecology

Term	Definition
ecology	the scientific study of interactions among organisms and between organisms and their environment
biosphere	part of Earth in which life exists including land, water, and air or atmosphere
species	a group of organisms so similar to one another that they can breed and produce fertile offspring
population	groups of individuals that belong to the same species and live in the same area
community	groups of different populations that live together in a defined area
ecosystem	collection of all the organisms that live in a particular place, together with their nonliving environment
biome	a group of ecosystems that have the same climate and similar dominant communites
autotroph	organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds
producer	autotroph
photosynthesis	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
heterotroph	organism that obtains energy from the foods it consumes
consumer	organism that relies on other organisms for its energy and food supply; heterotroph
herbivore	organism that obtains energy by eating only plants
carnivore	organism that obtains energy by eating animals
omnivore	organism that obtains energy by eating both plants and animals
detritivore	organism that feeds on plant and animal remains and other dead matter
decomposer	organism that breaks down and obtains energy from dead organic matter
food chain	series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
food web	network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
trophic level	step in a food chain or food web
ecological pyramid	diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web

Created by: smaske

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