State two ways cells of the immune system fight disease

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Name the glands associated with human digestive system

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )