Which of the following is a characteristic of mixtures? You can only see the different parts of a mixture when it is in liquid form. Substances that are mixed together retain their properties. You can always see the different parts of a mixture. Mixtures can only be in solid and liquid form.

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