Human Impact Exit Ticket

Studies have shown that the populations of many fish are declining due to overfishing. Which plan could help to conserve populations of fish?

• Allow only one type of fish to be caught.
• Make larger fishing ships that catch fish in one trip.
• Use nets with smaller mesh size to catch younger fish.
• Raise fish that will be used for food in artificial ponds.

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Carbon dioxide is a gas that traps heat in the atmosphere. Factories that burn fossil fuels produce carbon dioxide. Which strategy could reduce carbon dioxide in the atmosphere?

• Power factories with oil instead of coal. 
• Switch to alternative energy sources. 
• Locate factories near the poles, where it is cold.
• Plant shrubs and tress that use carbon dioxide near factories.

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What is the greenhouse effect?

• the burning of fossil fuels causes gases to mix with water in the atmosphere
• ground level ozone and vehicle exhaust react in the presence of sunlight
• certain gases such as carbon dioxide act like a blanket and keep the sun's energy close to earth

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Which is a cause of climate change?

• melting of sea ice
• cutting down trees
• severe storms 
• changes in plant life 

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Which is an effect of climate change?

• melting of sea ice 
• burning of fossil fuels
• cutting down trees 
• vehicle exhaust

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What is biodiversity?

• a population of a species 
• the growth of cities
• destruction of natural habitats
• a variety of organisms 

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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Approximately 75 percent of the Earth's surface is covered in water. So why is water considered such a precious resource?

• The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere
• Only a small fraction of the Earth's water is freshwater available for drinking and irrigation
• Each year, more freshwater is being trapped in icecaps located at the North and South Poles
• Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate

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Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there? 

• the decrease of chemical runoff into the oceans
• increased acid rain
• the increase of light pollution in cities
• the destruction of habitats

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Pollution can cause harm to the ___________.  

• air
• land
• water
• all of the above

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