Please help ( look at picture - worksheet ) giving the best answers would be rlly nice please

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

How does the nervous system affect the excretory system?

What factors contribute to the effect an environmental toxin has on the human body?