1. Nitrogen 78% Oxygen 21% Gases in Dry Air Trace Gases 1% Trace Gases Percentage by Volume Argon Carbon dioxide Neon Helium Methane Krypton Hydrogen 0.93 0.038 0.0018 0.00052 0.00015 0.00011 0.00005 1.What is the most abundant gas in the atmosphere? 2.Which gas is most important to your survival? 3.Which gas makes up nearly all of the 1% of the Trace Gases? 4.What percentage of Hydrogen is found in the air? 5.Neon, Helium, Methane, Krypton, and Hydrogen make up what TOTAL percentage of the gases in air?

2. Nitrogen 78% Oxygen 21% Gases in Dry Air Trace Gases 1% Trace Gases Percentage by Volume Argon Carbon dioxide Neon Helium Methane Krypton Hydrogen 0.93 0.038 0.0018 0.00052 0.00015 0.00011 0.00005 1.What is the most abundant gas in the atmosphere? 2.Which gas is most important to your survival? 3.Which gas makes up nearly all of the 1% of the Trace Gases? 4.What percentage of Hydrogen is found in the air? 5.Neon, Helium, Methane, Krypton, and Hydrogen make up what TOTAL percentage of the gases in air?

3. Nitrogen 78% Oxygen 21% Gases in Dry Air Trace Gases 1% Trace Gases Percentage by Volume Argon Carbon dioxide Neon Helium Methane Krypton Hydrogen 0.93 0.038 0.0018 0.00052 0.00015 0.00011 0.00005 1.What is the most abundant gas in the atmosphere? 2.Which gas is most important to your survival? 3.Which gas makes up nearly all of the 1% of the Trace Gases? 4.What percentage of Hydrogen is found in the air? 5.Neon, Helium, Methane, Krypton, and Hydrogen make up what TOTAL percentage of the gases in air?

4. Nitrogen 78% Oxygen 21% Gases in Dry Air Trace Gases 1% Trace Gases Percentage by Volume Argon Carbon dioxide Neon Helium Methane Krypton Hydrogen 0.93 0.038 0.0018 0.00052 0.00015 0.00011 0.00005 1.What is the most abundant gas in the atmosphere? 2.Which gas is most important to your survival? 3.Which gas makes up nearly all of the 1% of the Trace Gases? 4.What percentage of Hydrogen is found in the air? 5.Neon, Helium, Methane, Krypton, and Hydrogen make up what TOTAL percentage of the gases in air?