Oceans influence global weather patterns by
mixing cool water with warm surface water
a. causing the land near the coasts to be colder all year
b. causing the land near the coasts to have a more
c. constant temperature all year
d. causing the land near the coasts to be warmer all year

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.