Earth's Four Spheres

Which of the following is NOT one of Earth's four fundamental spheres?

• Astrosphere

• Atmosphere

• Hydrosphere

• Geosphere

What does the geosphere include?

• All water on Earth

• The solid Earth, including rocks and minerals

• The layer of gases surrounding Earth

• All living organisms on Earth

How does the geosphere interact with the hydrosphere?

• By absorbing carbon dioxide

• Through river erosion and sediment transport

• By providing oxygen for respiration

• Through volcanic activities

Which process is NOT part of the water cycle?

• Condensation

• Evaporation

• Precipitation

• Photosynthesis

Which of the following is NOT a region where life exists in the biosphere?

• Outer space

• Hottest deserts

• Highest mountains

• Deepest parts of the ocean