Pam is very neat and orderly. she always puts her dirty clothes in the hamper when she takes them off and washes the dishes after eating. according to freud, upon which psychosexual stage of development is pam fixated?

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