The ability of water to hold more heat than land keeps the temperature on earth a) moderate. b) the same. c) very low. d) very high.

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

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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