Human Impact on Environment

Front

Which of the following is NOT a direct result of deforestation?

• Soil erosion
• Increase in nitrogen
• Destruction of habitats
• Increase in carbon dioxide

Back

Increase in nitrogen

Front

Which of the following does NOT increase the amount of nitrogen in the ecosystem?

• fertilizers used in agriculture
• grazing livestock
• burning fossil fuels
• decomposing plants and animals

Back

burning fossil fuels

Front

What is an environmental impact of urban sprawl?

Back

All of the above (habitat destruction, loss of farmland, increase in runoff)

Front

What two trends increased the need for more highways?

Back

increase in urban sprawl, increase in vehicle use

Front

Which of the following preventative measures are taken to prevent landfills from polluting soil and groundwater supplies?

Back

The bottom and sides of the landfills are lined with clay or plastic liners

Front

Why is it important to prevent pollutants from seeping into the groundwater?

Back

Groundwater is used as a source for drinking water, so preventing pollutants from entering groundwater helps to protect people's health.

Front

Most water in the United States is used by:

• Irrigation of agricultural crops
• Power Plants
• Public Supply (including houses)
• Industry

Back

Power Plants

Front

Which of the following is NOT an example of point-source pollution?

• discharge pipe releasing industrial waste into a river
• runoff from a mining operation
• runoff from urban development
• oil spilling from a tanker

Back

runoff from urban development

Front

Which of the following statements is FALSE regarding water pollution?

• International cooperation is not necessary when it comes to managing water pollution.
• Once pollution enters water, it is difficult to remove.
• The United States has laws to help maintain water quality.
• Water pollution can be reduced simply by reducing water use.

Back

International cooperation is not necessary when it comes to managing water pollution.

Front

What does the Clean Water Act regulate?

Back

sources of water pollution, including sewage systems