Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Ecology
|
the scientific study of interactions among organisms and their environments.
|
|
|
Biosphere
|
the portion of Earth that supports life.
|
|
|
Abiotic Factors
|
The nonliving parts of an organisms' environment.
|
|
|
Biotic Factors
|
All the living organisms that inhabit an environment.
|
|
|
Population
|
A group of organisms that one species that interbreed and live in the same place at the same time.
|
|
|
Community
|
A collection of interacting populations.
|
|
|
Ecosystem
|
made up of interactions among the populations in a community and the commmunity's physical surroundings, or abiotic fators.
|
|
|
Habitat
|
The place where an organism lives throughout its life.
|
|
|
Niche
|
The role and posistion a species has in its environment.
|
|
|
Symbiosis
|
the realtionship which there is a close and permanent asssociation among organisms of different species.
|
|
|
Commensalism
|
A symbiotic realtionship in which one species benefits and another species is neither harmed nor benefited.
|
|
|
Mutualism
|
A symbiotic relaionship in which both species benefit.
|
|
|
Parasitism
|
A symbiotic realtionship in which one organism benefits at the expense of another.
|
|
|
Autotroph
|
Organisms that use energy stored in chemical compounds to manufacture their own nutrients.
|
|
|
Heterotroph
|
Organisms that cannot make their own food and must feed on other organisms.
|
|
|
Scavenger
|
Animals that feed on animals that have already died.
|
|
|
Decomposer
|
Organisms that break down and absorb nutrients from dead organisms.
|
|
|
Food Chain
|
A simple model that scientists use to show how matter and energy move through an ecosysytem.
|
|
|
Trophic Level
|
Organism in a food chain that represents a feeding step in the passage of energy and materials through an ecosystem.
|
|
|
Food Web
|
Model that expresses all the possible feeding relationships at each trophic level in a community.
|
