As it travels north, the warm water transported by the Gulf Stream undergoes evaporative cooling.

For example water undergoes autoprotolysis in the self-ionization of water reaction.

The water undergoes evaporation, condensation, and precipitation, falling back to Earth clean and fresh.

It is a matter of observation that fire, water, and every simple body undergo a process of analysis, which must either continue infinitely or stop somewhere.

"Bottled water doesn't undergo anywhere near the tests we give tap water," Ms. Best said.

This method is based upon the high reduction in polarity that liquid water undergoes when heated to high temperatures.

From that time the waters underwent a geologic history summarized under the names listed below.

The lake's water, which may have been untouched for 15 to 25 million years, is now undergoing analysis to test for the presence of bacteria.

Well, it turns out that at these pressures and temperatures the water underwent a phase transition from liquid to solid in less than 100 nanoseconds.

The certification process offered by Protected Harvest requires the water, air and soil of farms to undergo scientific scrutiny.