90-106 Flashcards
A group of individuals that belong to the same species and live in the same area.
Population
Two or more different populations that live in a defined area.
Community
A collection of all organisms that live in a particular place, together with their nonliving environment.
Ecosystem
A group of ecosystems that have the same climate and dominant organisms.
Biome
An organism that can make its own food internally.
Autotrophs
An organism that relies on other organisms for energy and food supply.
Heterotroph
A series of steps in which organisms transfer energy by eating or being eaten.
Food Chain
Links all the food chains in an ecosystem together.
Food Web
A cycle by which materials necessary for organisms are circulated between organisms and through the environment. (e.g. water, carbon, nitrogen)
Biochemical Cycle
The state of environmental conditions.
Enviornmental Quality
The evaporation of water from the leaves of plants.
Transpiration
The conversion of nitrogen gas into ammonia by bacteria living in the soil.
Nitrogen Fixation
Any relationship in which two species live together.
Symbiosis
A symbiotic relationship in which both species benefit.
Mutualism
A symbiotic relationship in which one organism lives on or inside another organism and causes it no harm.
Commensalism
