Why is blood clotting importanto it to heal cuts. it the blood circulateo it attack foreign materials. it to pump blood.

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

What is the compliment dna strand to the following sequence: ttgactaggcta

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