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20 Cards in this Set

  • Front
  • Back
population

a particular section, group, or type of people or animals living in an area or country

species

a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding

food web

a system of interlocking and interdependent food chains.

biodiversity


the variety of life in the world or in a particular habitat or ecosystem

symbiosis

interaction between two different organisms living in close physical association, typically to the advantage of both.

parasitism

a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other

competition

interaction between organisms, populations, or species, in which birth, growth and death depend on gaining a share of a limited environmental resource

mutualism

symbiosis that is beneficial to both organisms involved

commensalism

a class of relationships between two organisms where one organism benefits from the other without affecting it.

predation

biological interaction where a predator (an organism that is hunting) feeds on its prey

transfer of matter

The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem

photosynthesis

the process by which plants, some bacteria, and some protozoans use the energy from sunlight to produce sugar

heterotroph

An organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter

autotroph

An organism capable of synthesizing its own food from inorganic substances using light or chemical energy

abiotic

non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.

biotic
the living components of an ecosystem
habitat

the natural home or environment of an animal, plant, or other organism

niche

a position or role taken by a kind of organism within its community

trophic level

each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy

detritivores (decomposers)
an organism (as an earthworm, maggot, or a fungus) that feeds on dead and decomposing organic matter.