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Groundwater and Environmental Challenges

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Groundwater and Environmental Challenges

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Questions and Answers

What is the largest natural source of freshwater?

Groundwater

What percentage of Earth's population relies on groundwater for its needs?

over 1/3

Why is groundwater more vulnerable to environmental issues compared to surface water?

being underground makes it more vulnerable because it is not easily accessible for testing, regulating, and cleaning

In addition to being underground, where else does groundwater move?

as a source of discharge into Earth's streams, rivers, lakes, and oceans Signup and view all the answers

What problem are many cities facing that can cause damage to buildings, roads, and underground pipe systems?

Land subsidence Signup and view all the answers

What are some sources of groundwater pollution?

Agriculture, manufacturing, and underground storage tanks are some sources of groundwater pollution. Signup and view all the answers

Why are nitrates from fertilizers dangerous in drinking water?

Nitrates from fertilizers have been linked to various cancers, miscarriages, and birth defects. Signup and view all the answers

How does groundwater depletion differ from surface water depletion?

Groundwater can be depleted much faster than surface water because aquifers take a very long time to refill. Signup and view all the answers

What happens when groundwater is overdrafted?

Overdrawing groundwater not only means that we may run out of water to pump, but it also allows saltwater to intrude into aquifers along coastal areas. Signup and view all the answers

What is subsidence and how does it occur?

Subsidence is when the ground sinks down to fill the space below. It occurs when water is removed too quickly from groundwater. Signup and view all the answers