Cells are to living things as are to elements atoms
protons
particles
specks

9. wind power creates pollution. water air soil noise

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

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.