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

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

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.

Environmental & Atmospheric Sciences

A large scale map shows a large area, but with less detail than a small scale map

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences