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Humans & Enviroment
|What is a natural resource?
|A natural resource is a material that is found in nature that is essential or useful to people.
|How many pounds of gravel, stone, and sand do miners remove from the Earth?
|Miners remove 17,600 pounds of gravel, stone, and sand.
|What are gravel, stone, and sand used for?
|These materials are used to pave roads, make cement and build houses.
|How much oil does the United States use per year and per person?
|The United States uses 1100 gallons of oil per person per year.
|How much aluminum does each person in the United States use each year?
|Each person uses 55 pounds each year.
|How many mines are there in the United States?
|There are about 500,000 mines in the United States.
|What do forests provide?
|Forests provide lumber and paper products.
|What two places do lumber come from?
|Natural forest ecosystems and forests plantations.
|How much water do people in cities use?
|People use 40-100 gallons.
|What can water also be?
|Water can also ne an energy resource.
|What is the effect of water rushing through hydroelectric dams?
|Water rushing through hydroelectric dams generates electricity.
|What country uses the most water than any country per person?
|The United States uses the most water than any other country.
|How many pounds of iron and steel do people use?
|People use 1100 pounds of iron and steel.