Evidence from proxies indicate eight major oscillations in global temperatures over the past 800,000 years,most likely the result of
A) rising and falling sea levels that greatly impact photosynthetic activity.
B) variations in solar activity that produce different levels of radiation.
C) Milankovitch cycles of periodic variations in Earth's orbits around the sun.
D) lunar cycles in which the moon orbits at different distances from the Earth.
Correct Answer:
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Q25: Q26: Using ice core samples and analyses,researchers have Q27: The 2007 Panel on Climate Change (IPCC)reported Q28: In his movie,An Inconvenient Truth,Al Gore warns Q29: In general,temperatures along an ocean coastline vary Q31: If the sun suddenly stopped shining,where would Q32: You examine an ice core sample from Q33: London is located farther north than Toronto,yet Q34: Biomes are primarily identified by their Q35: Scientists use proxies to study climate to![]()
A)precipitation patterns
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