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Sience chap. 24


aquatic of, in, or pertaining to water
biological succession gradual change of one type of natural community into another
biomes a complex biotic community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region, esp. such a community that has developed to climax
biosphere the ecosystem comprising the entire earth and the living organisms that inhabit it
carnivores a flesh-eating mammal of the order Carnivora, comprising the dogs, cats, bears, seals, and weasels
community a locality inhabited by such a group
competition between two or more persons or groups for an object desired in common, usually resulting in a victor and a loser but not necessarily involving the destruction of the latter
cooperation an act or instance of working or acting together for a common purpose or benefit; joint action
decomposers an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances.
ecology the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms
ecosystem a system formed by the interaction of a community of organisms with their environment
environment the air, water, minerals, organisms, and all other external factors surrounding and affecting a given organism at any time
food chain a series of organisms interrelated in their feeding habits, the smallest being fed upon by a larger one, which in turn feeds a still larger one, etc
food web a series of organisms related by predator-prey and consumer-resource interactions; the entirety of interrelated food chains in an ecological community
habitat the natural environment of an organism; place that is natural for the life and growth of an organism
herbivores feeding on plants.
humus the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth
niche the position or function of an organism in a community of plants and animals
omnivores eating both animal and plant foods
population all the individuals of one species in a given area
predators any organism that exists by preying upon other organisms
prey an animal hunted or seized for food, esp. by a carnivorous animal
primary consumers animals that eat plants
producer an organism, as a plant, that is able to produce its own food from inorganic substances
saprophytes any organism that lives on dead organic matter, as certain fungi and bacteria
scavenger an animal or other organism that feeds on dead organic matter
secondary consumers animals that eat meat
soil the portion of the earth's surface consisting of disintegrated rock and humus
symbiont an organism living in a state of symbiosis
symbiosis the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism
terrestrial living on or in the ground; not aquatic, arboreal, or aerial.
tertiary consumers feeds upon secondary consumers
Created by: daisy37311