The main process contributing material in solution in sediment load is
A) biological weathering.
B) chemical weathering.
C) deposition.
D) physical weathering.
E) erosion.
B
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Clorox is a laundry bleaching agent used to remove stains from white clothes. Suggest why the name begins with Clor- and ends with -ox.
A. Clor- because it has chlorine, -ox because it is as strong as an ox. B. Clor- because it has chlorine ions, -ox because it uses oxygen. C. The active ingredient contains chlorine atoms, which behave as strong oxidizing agents. D. Clor- because it has chlorine ions, -ox because it is reduced.
The main way water mainly gets into a subduction zone is by:
a) heating of the overlying continental crust b) a decrease in pressure that causes melting c) rain associated with eruptions in the island arc d) seawater introduced into oceanic crust at the mid-ocean ridge, prior to subduction e) all of the above
Judge the following sentence according to the criteria given below. Oxygen 18 and Oxygen 16 are called stable isotopes because they are the stable products of radioactive decay
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct but the reason is incorrect. D) The assertion is incorrect but the reason is correct. E) Both the assertion and the reason are incorrect.
Which of the following amino acids has the lowest pI?
A) arginine B) cysteine C) glycine D) glutamic acid