European and american countries had less than 1000 deaths caused by measles in 2006. one could attribute this significant difference between them and the other regions to a. less vaccinations given. b. more vaccinations given. c. vaccinations not working effectively. d. more exposure to the disease.

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 : )

b. lithosphere, asthenosphere, mesosphere   is the answer most likely