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Chapter 7- Ecosystems
Terms in this set (18)
two or more living things in an ecosystem using the same limited resources
an organism that lives on or in another organism, helping itself but hurting the other organism
an organism that is harmed by a parasite
gradual change from one community of organisms to another
organism that breaks down and obtains energy from dead organic matter
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
A close relationship between two species that benefits at least one of the species.
The fennec, arctic, and gray foxes have different appearances because...
They have adapted to different environments.
What happens to a species that can not adapt to changing conditions in its environment?
The species may become extinct.
Which type of organism gets energy by breaking down the remains of dead organisms?
How is a food chain related to a food web?
Food chains make up a food web.
An organism that harms another in a symbiotic relationship is a...
Why does the amount of available energy decrease at higher levels of the energy pyramid?
Some energy is used by organisms at each level for their own life processes
When different species with similar needs live in an ecosystem with limited resources, what will happen?
They will compete for available resources.
Barnacles live on a whale. The barnacle benefit but do not help or harm the whale. What kind of relationship is this?
Which of the following would be the most useful adaptation for prey?
the ability to look like a stick or a rock
As bees collect nectar from flowers, they spread pollen. Both species benefit. What type of relationship is this?
In the nitrogen cycle, where do animals get their nitrogen?
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