What is a precititation?

What is the density of the exosphere? What does non-clastic mean? What is the relationship between temperature and altitude in the troposphere? Which layer of the Earth is 2000 degrees? What is the chemical formula for two bromine atoms one nitrogen atom and one chlorine atom? How can one determine the hardness of a mineral using Mohs scale need explain the technique and what is Mohs scale? Why does the level of oxygen decreases on high mountain? What is an example of mantle? Aluminium oxide not react with hot carbon? What part do faults play in many earthquakes? A crack in the earth opened when two plates pull apart? If you hear thunder 36 seconds after you see a flash of lightning how far away is the thunderstorm? How much rain does the coniferous forest get a year? What is the balanced equation of rubidium hydroxide and perchloric acid? How much is 48 F in degree Celsius? Does H2O or CaO have stronger bond? Why does starch turn blue with iodine? Give you a sentence with lava? What element is known as goiter? What element is located in the first row of group 1 why is the box for this element separated from the rest of group 1 by a slight space?

What is a precititation?