Human Impact on the Environment

Increase in which gas is primarily responsible for increased global warming?

• Carbon dioxide
• Water vapor
• Methane
• Nitric oxides

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Which has the least negative impact on wildlife habitat?

• agriculture

• development

• deforestation

• recreation

Carbon dioxide is released into the atmosphere through all of the following ways except:

• respiration

• cow burps and farts

• photosynthesis

• burning fossil fuels

Increased industrialization and development will most likely lead to

• a decrease in available habitats

• an increase environmental carrying capacity

• an increase the stability of ecosystems

• a decrease in global temperature

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 — increased CO₂ levels in the atmosphere

• genetically engineering animals — less food available to feed the world’s population

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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Global warming has been linked to a decrease in

• the size of the polar ice caps

• the temperature of Earth

• the rate of species extinction

• the rate of carbon dioxide production

Global warming is known as the gradual increase in _________________ of the atmosphere.

• precipitation

• sun spots

• temperature

• ocean currents

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Possible human solutions for limiting global warming and climate change are...

• being more energy-efficient

• using renewable sources of energy

• removing carbon from fossil fuel emissions

• all of the above

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Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water
• gases
• heat
• water vapor

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