Vocab
A group of individuals that belong to the same species and live in the same area
Population
obtain energy by consuming other organisms
Consumers/heterotrophs
A community of organisms where there are several interrelated food chains
Food web
Place where an organism lives
Habitat
competition between members of the same species
Intraspecific
Nonliving components of environment.
Abiotic factors
A species that influences the survival of many other species in an ecosystem
Keystone species
The continuous process by which water moves from Earth's surface to the atmosphere and back
Water cycle
Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
Niche
close interaction between species in which one species lives in or on the other
symbiotic relationship
All the living organisms that inhabit an environment
Biotic factors
levels of nourishment in a food chain
Trophic levels
The organic circulation of carbon from the atmosphere into organisms and back again
Carbon cycle
Strong competition can lead to local elimination of one of the species.
Competitive exclusion
An interaction in which one organism kills another for food.
Predation
the variety of life in the world or in a particular habitat or ecosystem.
Biodiversity
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
Energy pyramid
The transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere
Nitrogen cycle
species that occupy similar niches but live in different geographical regions
Ecological equivalents
A relationship between two organisms of different species where one benefits and the other is harmed
Parasitism
Organisms that make their own food
Producers/Autotrophs
A series of steps in which organisms transfer energy by eating and being eaten
Food chain
The movement of phosphorus atoms from rocks through the biosphere and hydrosphere and back to rocks.
Phosphorus cycle
competition between members of different species
Interspecific
A relationship between two organisms in which one organism benefits and the other is unaffected
Commensalism