Human Impact on the Environment

Which human activity is correctly paired with its likely future consequence?

• overfishing in the Atlantic — increase in supply of flounder and salmon as food for people 
• development of electric cars or hybrid vehicles — increased rate of global warming 
• use of fossil fuels — depletion of underground coal, oil, and natural gas supplies 
• genetically engineering animals — less food available to feed the world’s population

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1. What are renewable resources?

• . Resources that are used faster than they form

• resources that can replenish themselves over time

• resources that formed over millions of years

• resources that exist only in rural areas

According to the graph, what material’s recycling would reduce the largest portion of America’s trash?

• Metals

• paper

• plastics

• Yard trimmings

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Which human activity would preserve nonrenewable resources?

• deforestation
• removing carnivores from a forest 
• recycling
• heating homes with fossil fuels  

What are renewable resources?

• Resources that are used faster than they form
• a.       Resources that can replenish themselves over time
• a.       Resources that exist only in urban areas
• Resources that exist only in rural areas

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Which practice can help reduce soil erosion?

• Clear-cutting forests

• Building more roads

• Overgrazing by livestock

• Planting cover crops

Which of the following is a consequence of deforestation?

• Loss of habitat for many species

• Improved air quality

• Decreased carbon dioxide levels

• Increased biodiversity

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Which practice is most effective in reducing water pollution from agricultural runoff?

• Using chemical fertilizers

• Constructing more irrigation channels

• Increasing livestock density

• Implementing crop rotation

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What causes smog?

• The burning of particulates
• The formation of ozone
• Acid Rain
• the interaction of sunlight with pollutants produced by fossil fuels

Albert wants to practice conservation. He has decided to examine his lifestyle in order to identify areas in which he can reduce the resources he consumes, reuse resources he already has, and recycle resources that he cannot reuse. In which of the following ways can Albert best reduce the resources he currently consumes?

• Use paper grocery bags as gift wrap
• Ride a bike to work instead of taking his car
• Subscribe to a daily rather than a weekly newspaper
• Use an organic rather than synthetic fertilizer in his garden

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