Which of the following statements regarding adoption studies is false? A. Adopted children show some similarity in IQ scores. B. Siblings raised together have higher similarities in IQ than children raised apart. C. Unrelated children raised together show significant resemblance in IQ. D. In all instances, adopted children show higher IQ similarities than related children.

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