In sickle cell anemia, there is a mutation that prevent red bloods cells from carrying oxygen around the body. What protein is being affected?

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

When analyzing tree rings, what do scientists assume a thin ring indicates?

Anton created a chart listing different types of materials. which best complete the chart?