A student claims that for an organism to be called purebred the two alleles for a trait must be the same and that both alleles must be also
dominant. Do you agree? Explain.

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

Name the glands associated with human digestive system

How does human environment effect the biosphere