90-106 Flashcards
Population
A group of individuals that belong to the same species and live in the same area.
Species
A group of organisms so similar to one another that they can breed and produce fertile offspring.
Community
Two or more different populations that live in a defined area.
Ecosystem
A collection of all organisms that live in a particular place, together with their non-living environment.
Biome
A group of ecosystems that have the same climate and dominant organisms.
Autotrophs (producer)
An organism that can make its own food internally.
Heterotroph (consumer)
An organism that relies on other organisms for energy and food supply.
Food chain
A series of steps in which organisms transfer energy by eating or being eaten.
Food web
Links all the food chains in a ecosystem together
Biogeochemical Cycle
A cycle by which materials necessary for organisms are circulated between organisms and through the environment. (e.g. water, carbon, nitrogen)
Environmental Quality
The state of environmental conditions
Transpiration
The evaporation of water from the leaves of plants.
Nitrogen Fixation
The conversion of nitrogen gas into ammonia by bacteria living in the soil.
Symbiosis
Any relationship in which two species live together.
Mutualism
A symbiotic relationship in which both species benefit.
