The inside of a meander bend usually has a _____
a. point bar
b. cut bank
c. braided channel
d. plunge pool
e. pothole
a
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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.
Which of the following is the expected temperature at which a cloud becomes completely glaciated?
A. 0°C B. -5°C C. -18°C D. -40°C
You feel uncomfortably warm on a muggy day because water molecules are
A. condensing in the air. B. evaporating from moist skin. C. condensing on your skin. D. preventing condensation on moist skin.
Coastal waters often support larger blooms of plankton than open water due to a high nitrate level in
runoff. Indicate whether the statement is true or false.