All of the following are true of realtors except

a) they locate properties
b) they arrange an inspection of the property
c) they are usually paid about 500$ per sale
d) they arrange a walk through prior to closing

Often, a goby fish and a shrimp will live together in a burrow the shrimp has dug in the sand. the shrimp is almost blind and therefore is unable to see predators approaching when he is outside of the burrow. when the shrimp is in danger, the goby fish touches the shrimp with its tail to warn him. then, both go back into their burrow for safety. which type of relationship does this represent? a. mutualism b. parasitism c. commensalism d. predator/prey