Climate Change

Reduction of pH over time because of uptake of CO₂

• Biodiversity

• Ocean acidification

• Sustainability

• Quantitative

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How do wildfires contribute to climate change?

• Wildfires have been going on for millenia and therefore have little effect on the climate

• The ash emitted from wildfires reflects UV light back to space, cooling the planet

• Humans stop most wildfires before they get too big reducing biodiversity

• When forests burn large amounts of CO2 are released into the atmosphere contributing to the greenhouse effect

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The increase of which greenhouse gas due to human activity has had the greatest impact on global climate in the past century?

• carbon dioxide

• methane

• ozone

• water vapor

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The greenhouse effect, deforestation, and acid rain are a few major problems. These problems indicate which of the following is needed in human societies?

• the development of auto industries in developing nations

• cooperation between nations to reduce pollution

• an increase in the worldwide production of oil

• a reduction in reforesting efforts in certain regions

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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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Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960

• Hawaii has a lot of carbon dioxide

• humans have been working hard to decrease carbon dioxide levels

• atmospheric carbon dioxide levels have increased steadily since 1960

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Which of the following have been linked to climate change?  

• droughts

• flooding

• melting of polar ice caps

• all of the above

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Melting of glaciers and polar ice caps....

• will result in cooler temperatures in the Arctic

• will result in sea-levels rising

• Will have no effect on ecosystems

• None of the above

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How do volcanic eruptions affect global temperatures?

• warm the air because smoke and ash contribute to greenhouse gasses, then carbon dioxide cools the air.

• cool the air because smoke and ash block the sun, then carbon dioxide warms the air by contributing to greenhouse gases

• warm the air because carbon dioxide fumes block the sun, then smoke and ash cool the air by sealing holes in the ozone layer

• cool the air because smoke and ash mix with water vapor and form snow, then carbon dioxide warms the air by contributing to greenhouse gases.

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