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The three types of symbiotic relationships are mutualism, parasitism, and commensalism. In mutualism, both organisms gain something, in parasitism, one organism gains and the other loses, and in commensalism, one gains and the other doesn't gain or lose
I believe the answer is true. Humans have a digestive track, which removes unwanted matter from the body.
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your answer it is help to understand this question
<span>can be desalinated and used for irrigation</span>