Which substance is a solid?

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

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Long term exposure to waves can cause sunburns and skin cancer.