Answer:
Natural Gas
Explanation:
Natural gas is lighter than air. When you cool natural gas down to 260 degrees below zero, it turns from gas to a liquid. There are nearly four million Americans currently employed in the natural gas industry. Museums use natural gas to regulate temperature and humidityNatural gas is a fossil energy source that formed deep beneath the earth's surface.Natural gas contains many different compounds.The largest component of natural gas is methane, a compound with one carbon atom and four hydrogen atoms (CH4).We use natural gas as a fuel and to make materials and chemicals9) Which of the following is not a source of our atmosphere?
comets
plants
animals
solar radiation
outgassing from volcanoes
Answer:
The answer is comets.
Explanation:
Comets are outside of our atmosphere up in outer space lol have a good day