Which of the following is true of antibodies?
A) An organism is born with its full complement of antibodies.
B) A new antibody can appear whenever one is needed.
C) The ability to produce new antibodies is determined by an organism's genetic blueprint.
D) None of the above is correct.
C
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Which of the following is a principle to interpret relative ages?
a) The youngest rock is on the bottom b) a geologic feature is older than any rock or feature it crosscuts c) a younger rock can include pieces of an older rock d) an older magma can bake or metamorphose younger rocks
A rock with both igneous and high-grade metamorphic characteristics is a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
Using the rule of 70, a population growth rate of 2% annually will result in doubling a population in 35 years.
Answer the following statement true (T) or false (F)
Which of the following is the most toxic nerve agent?
a. Soman b. VX c. Sarin d. Tabun