Human Impacts on Earth's Surface

Front

What is the consequence of drilling for freshwater in coastal areas?

Back

An intrusion of salt water into aquifers.

Front

What happens after excessive withdrawal of groundwater in coastal areas?

Back

Intrusion of salt water into the water table.

Front

What is a possible consequence of marsh destruction?

Back

Decreased filtering of water.

Front

What is the most common source of contamination for freshwater resources?

Back

Runoff.

Front

How do surface mining and peat harvesting affect ecosystems?

Back

Both remove vegetation in the area, destroying habitats.

Front

What is saltwater intrusion?

Back

The movement of saltwater into freshwater aquifers, often due to excessive groundwater withdrawal.

Front

What role do marshes play in ecosystems?

Back

Marshes filter water, provide habitat, and help control flooding.

Front

What is runoff?

Back

Water that flows over land and can carry pollutants into freshwater sources.

Front

How does excessive groundwater withdrawal affect soil conditions?

Back

It can lead to drier soil conditions, increasing reliance on irrigation.

Front

What is the impact of vegetation removal on ecosystems?

Back

It destroys habitats and can lead to increased soil erosion.