91-106 Flashcards
(16 cards)
- Community –
Two or more different populations that live in a defined area.
- Population -
A group of individuals that belong to the same species and live in the
same 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.
- Commensalism –
A symbiotic relationship in which one organism lives on or
inside another organism and causes it no harm.
- Parasitism –
A symbiotic relationship in which one organism lives on or inside
another organism and harms it.