Which of the following organisms feeds on the largest variety of producers

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

On his trip to the galapagos islands, darwin determined that animals on the islands

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.