after malaria is cured, the frequency of the hbs allele should decrease in regions with lots of mosquitoes because

The (blank) states that all loving things are made of cells.

The united states uses which source of energy to produce almost 40 percent of its electricity

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.