Which of the following minerals is a native element?
a. pyrite
b. diamond
c. graphite
d. gold
d
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Not all components of birth control medications are processed by a women's body. Some of the birth control drugs are excreted and transported to a sewage treatment plant. At the plant, the chemicals are not broken down and are released to a local waterway.
Answer the following statement true (T) or false (F)
Lake-effect snows
A) are enhanced by a large fetch. B) are most common in late spring. C) are caused by mT air masses. D) result in snowbelts on the north sides of the Great Lakes. E) all of the above
The basic lithostratigraphic unit is a mappable unit of strata with distinctive upper and lower boundaries called a(n)
____. a. series b. extrusive c. formation d. rock e. biozone
Which of the following is the meaning of "essential" in the phrase essential amino acid?
A) An essential amino acid is one which is included in the primary structure of all proteins. B) An essential amino acid is one which is necessary for a protein to adopt the proper secondary or tertiary structure. C) An essential amino acid is one which cannot be synthesized by the human body or which can be synthesized but not in sufficient quantities for the body's needs. D) None of the above is correct.