Состав воздуха

What gas makes up approximately 78% of the Earth's atmosphere?

• Hydrogen (H2)

• Nitrogen (N2)

• Oxygen (O2)

• Carbon dioxide (CO2)

What gas is the second most common in the atmosphere?

• Carbon dioxide (CO2)

• Nitrogen (N2)

• Oxygen (O2)

• Hydrogen (H2)

What gas is necessary for the respiration of living organisms?

• oxygen

• argon

• carbon dioxide

• nitrogen

What gas is used in plants for photosynthesis?

• Oxygen (O2)

• Hydrogen (H2)

• Nitrogen (N2)

• Carbon dioxide (CO2)

What gas contributes to the ozone layer in the atmosphere?

• Argon (Ar)

• Oxygen (O2)

• Carbon dioxide (CO2)

• Nitrogen (N2)

What gas is a result of fuel combustion?

• Carbon dioxide (CO2)

• Oxygen (O2)

• Nitrogen (N2)

• Methane (CH4)

What gas contributes to the greenhouse effect?

• Carbon dioxide (CO2)

• Argon

• Oxygen

• Nitrogen

What gas is formed during the decomposition of organic substances in nature?

• oxygen

• hydrogen

• carbon dioxide (CO2)

• nitrogen

What gas is used in medicine to facilitate breathing?

• Nitrogen

• Carbon dioxide

• Oxygen

• Argon

What gas is the lightest gas in the atmosphere?

• Carbon dioxide

• Oxygen

• Helium

• Nitrogen