Adepression in the ground due to a cave collapse or acidic water dissolution of limestone is called a
a. cave.
b. stalactite.
c. sinkhole.
d. stalagmite.

The answer is (C) Sinkhole because it is happening only to the ground not the top of the cave so that is the only reasonable answer.

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.