Antonio owns property on which a gasoline station once stood. Josh agrees to buy the land so that he can build an office on it. They include language in the contract making the purchase contingent on a determination that there are no environmental problems with the property. The contingency represents:.a. an implied conditionb. a condition precedentc. a condition subsequent d. a concurrent condition

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