Predict how the results would change if the field were enclosed by a cinder wall instead of a chain-link fence. a. nothing would change. b. plants that require wind and animals to disperse their seeds would increase in number. c. plants with runners would decrease in number. d. plants that require wind and animals to disperse their seeds would decrease in number. 2. explain how you arrived at this answer.

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.