If water is leaving the cell what kind of solution is it in

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

What is the 77 element on the periodtic table

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