In what way can an economist use a production possibilities graph to express efficiency?

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

Which nucleotide component contains nitrogen

What is responsible for the uneven heating between the poles and the equator on any given day