While teaching a nursing student, a registered nurse says "this is a study in which the investigator controls the study variable and randomly assigns subjects to different conditions to test the variable." which type of research is the above statement?

the correct answer is,because people are denied membership in churches of other racial and ethnic groups. good luck

explanation:

bro these r easy u may have to do them urself bro. lol jk the answer is two for nimber one, and for question number two sahel boi xd have fun get rekt m8

the correct answer is d

permafrost layer, it exists beneath a layer of soil, rock or sediment.