Nearly all cars in the united states are powered by what fossil fuel?
oil
coal
nuclear energy
natural gas

The answer to the question is oil because we can't use coal or nuclear energy  

or natural gas non of them make sense beside oil  

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )

allowed for the prediction of the properties of missing elements.