Fact 1: Ameasuring cup is used for measuring the volume of substances.

Fact 2: With a measuring cup, pour different amounts of water into each cup.

Given the two facts above, answer the question "What can determine the amount of water?" with the following options: 
- rainfall
 - streams.
 - the volume
 - streams
 - evaporation
 - Temperature
 - erosion
 - vaporization


 

   the volume      