8
A relationship between two species where both species benefits is called: Mutualism.
Added 8/11/2015 2:14:48 PM
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Confirmed by
Andrew. [8/11/2015 2:21:12 PM]
8
Agents that carry parasites from one host to another are called: vectors.
Added 8/11/2015 2:15:01 PM
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Confirmed by
Andrew. [8/11/2015 2:21:31 PM]
8
A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.
Added 8/11/2015 2:15:07 PM
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [8/11/2015 2:21:39 PM]