The first line of defense involves which structure? a. Tcell, b. skin, c. blood, d. b cell

In which of the following relationships is one organism always benefited while the other organism is always harmed

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?