Which statement describes the cells in a many-celled organism? (a)they can all perform exactly the same functions. (b)they are all exactly the same. (c)they can be quite different from each other. (d)they are all the same size.

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing