Understanding density can you predict if a. an object will roll. b. an object will deflate. c. an object will sink or float.

Understanding density helps you predict whether an object will sink or float.  
 C

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.