The cleansing agent in many detergents is which of the following?
A) a sodium alkylbenzenesulfonate
B) sodium silicate
C) sodium perborate tetrahydrate
D) Any of these, they are all cleansing agents.
A
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Why did the population of Jews in Europe drop from 9.5 million before World War II to less than 2 million today?
A) Their birth rates dropped as their urbanization rate increased, and the creation of Israel caused most to emigrate to the Middle East. B) The creation of Israel caused most Jews to emigrate from Europe to the Middle East. C) Nazis and their sympathizers murdered approximately six million Jews in the Holocaust. D) The vast majority of Jews emigrated to the United States. E) Their birth rates dropped as rates of urbanization increased.
Body waves can be divided into two types: primary waves and secondary waves. What is the difference between these two types of body waves?
What will be an ideal response?
What kind of a volcano is Mount Rainier?
A. an exceptionally large volcanic dome B. an explosive scoria cone C. a collapsed caldera D. a large and dangerous shield volcano E. None of these choices are correct.
Earth's glacial periods are explained by orbital variations that produce a small temperature change, which is then amplified by changes in carbon dioxide concentrations.
Answer the following statement true (T) or false (F)