Understanding Groundwater and Its Importance

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

• 50%

• 70%

• 30%

• 90%

What is the primary source of groundwater?

• Ocean water

• Lake water

• Precipitation

• River water

What is an aquifer?

• A type of rock

• A water-carrying underground reservoir

• A type of soil

• A water purification system

Which of the following is a threat to groundwater?

• Increased rainfall

• Climate change

• Decreased evaporation

• Natural filtration

How can intensive farming affect groundwater?

• It has no effect on groundwater

• It can lead to groundwater pollution

• It purifies groundwater

• It increases groundwater levels