Where does a tree get its mass from as it grows?

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

What came first egg or chicken? and is tomato a vegetable or a fruit?

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