Briefly explain the three types of interactions that can take place in an ecosystem.
Mutualism, commensalism, parasitism.
What happens in a parasitic relationship? How are wasps parasitic?
An organism of one species benefits at the expense of an organism of another species.
What is a commensalistic relationship? Support your answer with an example.
When one organism benefits without harming the other.
How can parasites affect humans?
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What is competition in an ecosystem?
The attempt by organisms to obtain a resource that is available in a limited supply.
Explain how the nitrogen cycle is an example of mutualism.
It benefits both participants.
Mutualism often takes place in our oceans. Discuss two ways in which it happens.
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Do all parasites kill their hosts? Give an example of a parasite and explain its relationship with its host.
No.
Different species eat different foods and hunt at different times. How does this help the populations of an ecosystem survive?
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What is a niche? Provide two examples.
An organism's specific role in the community.