A student wants to test if the type of gasoline used in a car affects the gas mileage. On the list below, check off all the factors that would be constants. A. The engine used
B. Premium gas
C, Amount of gas used
D. Regular gas
E. The car used
F. Type of road
G. The driver
H. The speed of the car

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.