Which can lead scientists to change a theory that has already been accepted

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Why is a mushroom considered a heterotroph

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.