Question 4 1 pts
What are the major methods by which the Sun's energy is transported around the
Earth system? Select all that apply.
Oglacial flow
plate motions
O ocean currents
o the movement of rock
O atmospheric circulation

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.