How many cromatids are in each replicated chromosome

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

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.

Earth is tilted on its axis. which of these would not exist if earth had no tilt?