Levels of Organization
This is a single living organism.
What is an individual?
These are parts of an ecosystem that are living or once were living.
What are biotic factors?
When organisms seek the same limited resource.
What is competition?
Organisms that capture energy from the sun or chemicals.
What are primary producers (autotrophs)?
Nonnative organisms that spread widely in a community.
What are invasive species?
A group of the same species living in one area.
What is a population?
These are parts of an ecosystem that have never been living.
What are abiotic factors?
A predator hunts, kills, and consumes prey.
What is predation?
Organisms that rely on other organisms for energy.
What are consumers (heterotrophs)?
A lack of these limiting factors allows invasive species to grow unchecked.
What are predators, parasites, or competitors?
All the different populations living together in one area.
What is a community?
Decaying organisms are considered this type of factor as long as their structure remains cellular.
What are biotic factors?
A relationship where both species benefit (+/+).
What is mutualism?
The position an organism occupies in a feeding hierarchy.
What is a trophic level?
True or False: All invasive species are harmful.
What is False?
Includes living and nonliving things interacting together.
What is an ecosystem?
The specific environment where an organism lives.
What is a habitat?
A relationship where one species benefits and the other is unaffected (+/0).
What is commensalism?
Only about this percent of energy is passed to the next trophic level.
What is 10%?
This invasive species in North America is beneficial because it pollinates crops.
What is the European honeybee?
The largest level of ecological organization that includes all ecosystems on Earth.
What is the biosphere?
Anything an organism needs to survive and reproduce.
What are resources?
One organism benefits while the other is harmed (+/–), where the parasite depends on a host.
What is parasitism?
A network showing overlapping and interconnected feeding relationships.
What is a food web?
When an invasive species grows without natural controls, it can cause this to native populations.
What is population decline or ecosystem imbalance?