Which two scientists determined that all living things are composed of cells?

a) scheleiden and schwann

b) waston and crick

c) virchow and remak

d) hooke and von leeuwenhoek

The image below shows a weather service map. which details best describe this map? check all that apply

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

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.