Which two substances are needed for cellular respiration Just in case someone needs the answer it’s Carbon Dioxide and Oxygen <3

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

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.

Can someone me answer this question? you