What is equal protection?
a. no distinctions can be made between race groups
c. race groups can be separated and any conclusion can be drawn
b. states cannot classify based upon race
d. states cannot draw any unreasonable distinctions between race groups

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