Ends the TAA process and FDP Phase IV. Provided to the Army provides the operating and generating force structure at the standard requirements code (SRC) level of detail for the next 2-5 years Key input to the POM process
Both oxygen and hydrogen are reactive, colorless gases that are found in the air and are essential for your survival. The primary difference between the two elements is their physical and chemical properties.
The earth is not made mostly of hydrogen because the earth is small (less gravity) and hydrogen is light, so the hydrogen that was here, has mostly escaped the gravitational pull of Earth. On Earth, hydrogen can be found in many places. Hydrogen combines with oxygen to form water, which is essential for life on earth. Water makes up three quarters of the earth s surface (See Fig. 4). Three quarters of our bodies are made of water. Fossil fuels are made of hydrocarbons, a combination of hydrogen and carbon.