According to abc news, standardized tests such as the sat are not really the best indicator of success in college as economically well-off students who can pay for the sat prep courses get an unfair advantage. relating to this, the lecture introduces a concept that the sat would measure the accumulation of knowledge rather than the actual intelligence. this concept is known as what?

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