Tissues of which of the following organisms would contain the highest concentration of DDT?
a) zooplankton
b) osprey
c) tuna
d) sardines
e) swordfish
B
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Indicate whether the statement is true or false
Lime, CaO, is insoluble in water. In which of the following materials will it dissolve?
A) HCl(aq) B) NaOH(aq) C) Ca(OH)2(aq) D) none of these
What happened to sea level during the ice ages of the Pleistocene?
A. Sea level went up less than 10 meters. B. Sea level went down more than 10 meters. C. Sea level did not change. D. Sea level went down less than 10 meters. E. Sea level went up more than 10 meters.
If the half-life of a radioactive isotope is known and the parent/daughter ratio can be determined, then the age of the sample can be calculated using radiometric dating techniques.
a. true b. false