Which of the following is an example of mutualism? a group of piranhas work together to attack a large animal. a mosquito feeds off the blood of another animal and leaves an itchy bump. barnacles attach themselves to the bottom of a boat for transportation. a sea sponge attached to a crab the crab hide from predators and gains transportation for itself.

A seas sponge attached to a crab.

Step-by-step explanation:

Mutualism is when both organisms benefit. In this case the sponge gets protection and the crab does as well.

4th option is correct xy=-10

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2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves