Extinction & Eco-Relationships
You have many species of bacteria living in your gut that help you with digestion. This relationship is best defined as this.
What is mutualism?
Any close, longterm relationship between two organisms can be defined as this.
What is symbiosis?
This percentage of energy is transferred from on trophic level to the next.
What is 10 percent?
A landslide causes part of a mountainside to fall away, leaving bare rock. In the years immediately following the landslide, the area will experience this type of succession.
What is primary succession?
A species with a tolerance for a wide variety of environmental conditions.
What is a generalist?
Any organism that uses the sun’s energy to create sugars is called this.
What is a producer?
One organism hunts, kills and consumes another organism. This is...
What is predation?
These are two forces that help prevent an introduced species from becoming an invasive species.
What are predators, disease, competition, parasites, limited resources, conditions within the environment outside the organism's range of tolerance?
This is the difference between mutualism and commensalism.
What is ...
In mutualism, both species benefit; in commensalism, one species benefits and the other is unaffected.
When environmental conditions change rapidly or severely enough that a species cannot adapt to the change, this occurs.
What is extinction?
A species that exerts a powerful influence over a community; its loss affects much of the food web.
What is a keystone species?
These are two events that can trigger the process of secondary succession.
What are...?:
forest fires, deforestation, flood, agriculture/plowing a field
This main source of energy in an ecosystem in which deer eat grass and coyotes eat deer.
What is the sun?
An organism that depends on another without killing it is this.
What is a parasite?
In a food web that consists of grass, mice, deer, coyotes, and hawks, this species is likely to have the greatest biomass.
What is grass?
A niche restricted by competition is a called this.
What is a realized niche?
The arrows in a food web indicate this.
What is the direction of the flow of energy (food)?
A nation where most of the people eat a primarily vegetarian diet will be able to support a ____________ (higher or lower) population than it would if the people ate a lot of meat.
What is higher?
In a woodland, a rabbit eats grass, and a coyote eats the rabbit. In this scenario, the coyote is on this level of the trophic pyramid.
What is a secondary consumer?