Pangaea refers to the
A) closing of the Panamanian land bridge during the Miocene Epoch.
B) changes in Earths axial tilt from 21.5° to 24.5°
C) Himalayan orogeny that altered the path of the polar jet stream, creating wetter conditions on the windward side of the range.
D) alterations in sunspot activity that resulted in a colder than normal period during the Little Ice Age.
E) Triassic supercontinent that existed approximately 220 mya.
E
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How does connecting a metal like iron with a wire to a metal that is easier to oxidize like zinc help prevent corrosion of the iron?
A. There is no salt-bridge, so there is no reaction between the two metals. B. The wire is acting as an oxidant and keeps the two metals from undergoing other chemical reactions. C. The other metal absorbs the electrons from the iron, which keeps the iron from undergoing oxidation. D. The other metal is oxidized and adsorbs all the oxidant, keeping it away from the iron. E. The other metal is oxidized instead and the electrons travel to the iron, keeping it from oxidizing.
In which two stages of the Demographic Transition is the rate of natural increase (RNI) high?
A) Stage 1 and Stage 4 B) Stage 2 and Stage 4 C) Stage 2 and Stage 3 D) Stage 3 and Stage 4 E) Stage 1 and Stage 3
Instructions: Choose one answer from each pair of selections. The largest diurnal temperature ranges would usually be observed in a(n) RURAL | URBAN area
A region where one tectonic plate dives below another is called a divergent plate boundary
Indicate whether the statement is true or false