Fact 1: The force of water against the seed coat causes a root to emerge from a seed.

Fact 2: Water is made up of H2O molecules.

Given the two facts above, answer the question "what is forced against the seed coat to cause the root to emerge from a seed?" with the following options: 
- germination
 - UV
 - urea
 - h2o
 - sunflower
 - rain
 - oil
 - newtons


 

    h2o     