Biology Human Impact Climate Change

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 an EFFECT of climate change?

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

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What is the main gas responsible for causing an increase in global temperatures?

• Oxygen

• Carbon Dioxide

• Helium

• Nitrous Oxide

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1.What does the picture represent?

• Lines of latitude

• Greenhouse effect

• Climatic zones

• Weather patterns

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Which two are likely to result from climate change?

• increase in surface temperatures

• reduction in greenhouse gases

• rise in ocean levels

• decrease in air pollution

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Why are forests important in reducing climate change? Trees ____

• use Carbon Dioxide to make food & release oxygen into the atmoshpere

• provide building materials

• are an important food source

• reflect all sunlight away from the Earth

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Which best explains how livestock farming contributes to global warming ? Animals __________

• waste pollutes the soil

• are consuming too much grass

• decayed matter emits too much carbon dioxide

• produce methane when they are digesting food

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_____________ is transferred between the atmosphere, hydrosphere, geosphere(lithosphere) and biosphere in the Carbon Cycle.

• Oxygen

• Carbon

• Water

• Nitrogen

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The graph shows changes in carbon dioxide

(CO2) concentrations and surface temperatures

on Earth from the years 1880 to 2000.

Why do carbon dioxide concentrations and

surface temperatures show the relationship seen

in the graph?

• because lower carbon dioxide levels mean more

  heat is retained in Earth's atmosphere

• because higher carbon dioxide levels mean

  more heat is retained in Earth's atmosphere

• because lower carbon dioxide levels mean less

  heat is retained in Earth's atmosphere

• because higher carbon dioxide levels mean less

  heat is retained in Earth's atmosphere

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What is climate change?

•  What's going on with the atmosphere at any particular time
• A belief or opinion

• An area's pattern of weather over a long period of time
• a long-term change in the earth's climate, especially a change due to the increase in the average atmospheric temperature.

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