Exam 29: global Climate Change Climate Refugees

A) The cycles have no impact on the climate of the Earth.
B) The cycles are very long-term and would not have a notable change over a few decades.
C) The cycles are speeding up and producing climate change.
D) The Earth's position relative to the Sun is in a warming phase.

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Biodiversity is being threatened on a sc...

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A) much warmer than current temperatures
B) only a little warmer than current temperatures
C) the same as current temperatures
D) much cooler than current temperatures
E) We cannot tell what the temperature would be like without greenhouse gases.

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A) plant growth and dormancy due to seasons
B) temperature fluctuation
C) movement of ocean air streams
D) industry booms
E) relative distance of Earth to the Sun

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A positive feedback loop is any change c...

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Mitigation refers to efforts intended to...

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A) Climate models are not testable.
B) Climate models project future climate conditions.
C) Climate models take into account many variables,including global air circulation patterns and carbon dioxide levels.
D) Climate models that exclude anthropogenic factors are most accurate.

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A) The cold winter is a result of climate patterns and not weather.
B) The cold winter is part of the natural warming cycle of the Earth.
C) Climate change can cause extreme cold weather in some areas.
D) The cold winter has nothing to do with the overall climate in your area.

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A) absorbing CO₂ and lowering the pH of the water,causing it to become more acidic
B) releasing excess CO₂ into the atmosphere,increasing the air temperature over the oceans
C) cooling the ocean waters,allowing ocean organisms to adapt easily
D) lowering the pH,which causes organisms to create thicker,stronger shells
E) cooling ocean waters,which reduces coral bleaching

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A) ¹⁶O
B) ¹⁴N
C) ¹⁸O
D) CO₂
E) ¹⁴C

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A) command and control regulations
B) tax breaks
C) carbon taxes
D) cap-and-trade policies
E) All of these answers are correct.

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An increase of a few degrees in the aver...

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A) temperature
B) CO₂ levels
C) global air circulation patterns
D) precipitation
E) all of these variables

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A) local air measurement
B) water sampling
C) measurements taken from gas bubbles trapped in the ice
D) temperature correlation

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A) carbon dioxide
B) methane
C) nitrous oxide
D) halocarbons
E) sulfur oxides

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A) Increased levels of human-produced carbon dioxide have enhanced the greenhouse effect.
B) The greenhouse effect did not exist before humans.
C) Greenhouse gases work by magnifying incoming solar radiation onto Earth's surface,just like in a greenhouse.
D) Volcanoes are the largest source of greenhouse gases.
E) All of these answers are true.

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A) The rate of ice and permafrost melting is accelerating.
B) There is less precipitation in coastal areas.
C) Marine species are moving deeper into the ocean.
D) Some areas of Antarctica are cooling and gaining snow.
E) All of these statements are true.

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A) methane released from rice paddies
B) carbon dioxide released from burning fossil fuels
C) CFCs released from landfill waste disposal
D) nitrous oxide released from volcanic eruptions

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