Which of the following has been indicated as a cause of spontaneous abortions in sea lions and the death of shrimp in Escambia Bay, Florida?
A) DDT
B) Methyl mercury
C) PCBs
D) Polycyclic aromatic hydrocarbons
E) Sewage sludge
C
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Which of the following group of regions receive the most frequent thunderstorms?
A) Gulf of Mexico, central Africa, Southeast Asia B) Great Lakes, north Africa, Japan C) West coast of the United States, northern Canada, Antarctica D) West coast of South America, west coast of south Africa, southern Australia
A hanging valley forms from the eroded valley of a tributary valley glacier that met the trunk valley
glacier at an elevation high above the valley floor of the latter. What will be an ideal response?
According to the 1982 Law of the Sea, resources within 200 nautical miles of a nation's shoreline are: a. in its exclusive economic zone
b. owned by all. c. in the high seas. d. in its territorial waters.
Which of the following are prokaryotes?
A) Yeast cells B) Sunflowers C) The president and first lady D) Soil bacteria