What type of data is recorded by the electrocardiogram?

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

Witch theory suggests all living things are made up of cell or cells

The image shows a group of fish. the type of social behavior shown in the image is called