Air Composition

What are the main components of air?

• carbon dioxide, helium, and neon

• hydrogen, sulfur, and radon

• nitrogen, oxygen, and argon

• methane, krypton, and xenon

What is the percentage of nitrogen in the air?

• 60%

• 90%

• 50%

• 78%

What is the percentage of oxygen in the air?

• 30%

• 21%

• 50%

• 10%

What are the other gases present in the air?

• Nitrogen, Oxygen, Argon, Carbon Dioxide, Neon, Helium, and other trace gases

• Water vapor, Sulfur dioxide, Methane

• Krypton, Radon, Xenon

• Hydrogen, Methane, Nitrous Oxide

How does the composition of air vary at different altitudes?

• The composition of air varies due to changes in color and smell

• The composition of air varies due to changes in the number of clouds

• The composition of air remains the same at all altitudes

• The composition of air varies due to changes in pressure, temperature, and humidity.

Why is carbon dioxide important in the air?

• It is only important for human respiration

• It helps to regulate the Earth's temperature and is essential for photosynthesis in plants.

• It has no impact on the environment

• It is harmful to plant growth

How does air pollution affect the composition of air?

• It decreases the amount of nitrogen in the air

• It has no impact on the composition of air

• It changes the levels of gases and particles in the air.

• It increases the oxygen levels in the air

What are the natural sources of air pollution?

• Agricultural activities and pesticides

• Factories and industrial plants

• Natural sources such as wildfires, volcanic eruptions, and dust storms.

• Car emissions and exhaust fumes

How can we maintain the composition of air?

• By reducing pollution and promoting sustainable practices.

• By cutting down more trees and releasing harmful chemicals into the atmosphere.

• By ignoring environmental regulations and burning fossil fuels.

• By increasing pollution and using unsustainable practices.

What are the effects of air composition on human health?

• Respiratory problems, cardiovascular issues, and other health complications

• Improved immune system

• Enhanced cognitive function

• Decreased risk of allergies