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Correct Answer: B) Summer.
Correct Answer: B) Gases and particles may block sunlight and lower temperatures.
Correct Answer: B) Oceans have been getting more acidic due to warmer global temperatures.
Correct Answer: B) Winter.
Correct Answer: B) The burning of fossil fuels.
Correct Answer: C) Longwave radiation.
Correct Answer: C) An earthquake.
Correct Answer: A) Answer the 5 W's:who, what, when, where and why.
Correct Answer: B) Results in a short period of cooling.
Correct Answer: A) Earth's climate change has naturally many times over the past 4.5 billion years.
Correct Answer: A) Global warming.
Correct Answer: D) All the above.
Correct Answer: B) Atmosphere.
Correct Answer: A) Norfolk.
Correct Answer: A) Acid rain.
Correct Answer: D) More CO2, higher temperature.
Correct Answer: D) Increased polar ice mass.
Correct Answer: B) Buring fossil fuels.
Correct Answer: D) Sunlight.
Correct Answer: B) Decreased species ranges in temperate areas.
Correct Answer: A) Chloroflourocarbons (CFCs).
Correct Answer: C) Tilt of the Earth on its axis.
Correct Answer: B) Thermal expansion of the ocean.
Correct Answer: B) Phloem.
Correct Answer: D) Animal; sky.