Upwelling along the coast of California ____
A) ?reduces the temperature of the local coastal climate
B) ?reduces biological productivity
C) ?increases the temperature of the local coastal climate
D) ?is produced by north-flowing winds
A
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Which of the following best matches the description?The most abundant greenhouse gas
A. Methane. B. Global warming. C. climate change. D. greenhouse gases. E. IPCC. F. Kyoto Protocol. G. CFCs. H. Nitrous oxide. I. Carbon dioxide. J. Greenhouse effect.
Line A-B represents:
A) an isobar. B) a warm front. C) an occlusion. D) a cold front. E) none of these
The Earth's magnetic field is generated by
A. convection currents in the asthenosphere. B. aligned magnetic minerals within Earth's inner core. C. salty water moving through the deep parts of the crust. D. movement of iron and electrical currents within Earth's outer core.
Normally, solar wind approaches Earth at an average speed of ____
a. ?300 km/sec b. ?400 km/sec c. ?500 km/sec d. ?100 km/sec e. ?1000 km/sec