Natural Resources

What is the most abundant gas in the Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

Which of the following is a greenhouse gas?

• Nitrogen

• Oxygen

• Methane

• Argon

Which process in the water cycle is responsible for cloud formation?

• Evaporation

• Condensation

• Precipitation

• Infiltration

Which layer of the atmosphere contains the ozone layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

What is the primary source of energy for the Earth?

• Moon

• Sun

• Stars

• Earth's core

Which gas is released during respiration?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What percentage of the Earth's surface is covered by oceans?

• 50%

• 60%

• 71%

• 80%

Which of the following is a fossil fuel?

• Wood

• Solar energy

• Coal

• Wind energy

What is the primary component of the Earth's hydrosphere?

• Land

• Water

• Air

• Ice

Which process is responsible for the removal of topsoil by wind and water?

• Soil erosion

• Sedimentation

• Weathering

• Deposition