Many scientists expect global temperatures to _______ by 2100.a.rise 0.4-1.4ºC b.rise 1.4-5.8ºCc.fall 0.4-1.4ºC d.fall 1.4-5.8ºC
Explain how glaciers can change the landscape and physical characteristics of continents.
Explain why the greenhouse effect is not entirely a man-made phenomenon.
Which of the following continents was covered by glaciers during the Pleistocene ice age?a.Europeb.South Americac.Australiad.Africa
Which of the following is predicted to be an impact of global warming?a.extreme weatherb.ocean acidificationc.species extinctiond.all of the above
Explain why some groups doubt the occurrence of global warming and global climate change.
Without the greenhouse effect, Earth would be _______.a.too cold to support our current ecosystemb.too warm to support our current ecosystemc.too wet to support our current ecosystemd.barren of all life
Explain why entering an interglacial period resulted in an increase in biodiversity on Earth.
Why did scientists think the world was experiencing global cooling between the 1940’s and 1970’s.a.Pollution was blocking sunlight.b.Pollution was trapping heat in the atmosphere.c.Winters were the longest and coldest since the last ice age.d.Biodiversity was declining.
Explain why scientists are concerned about human activities that cause global warming if global warming is caused by the greenhouse effect and the greenhouse effect is a natural part of Earth’s climate.
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