Tatiana Mcmahon

Biology

1 December, 20:01

Why do more cancer deaths (as a percentage of population) occur in the U. S. than in poor regions of Africa or Asia?

Select one:

a. pollution is worse is the U. S.

b. the population is more mixed than in most nations

c. the population tends to be older in the U. S.

d. there is more radiation in the U. S. from bomb testing