Many fish contain high levels of ________ and should either not be eaten or their consumption should be limited.
A. Lead
B. Chlorophyll
C. Mercury
D. Chloroform
E. Ozone
Answer: C
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The Montreal Protocol
A) aims to reduce and eliminate all ozone depleting substances. B) established a framework to address acid precipitation. C) created the Intergovernmental Panel on Climate Change. D) only addresses CFCs. E) is ineffective because so few countries have ratified it.
The southeastern United States is a good example of a humid subtropical climate
Indicate whether the statement is true or false
When the rear-flank downdraft strikes the ground, it may interact with the forward-flank downdraft beneath the mesocyclone to initiate _______________.?
Fill in the blank with correct word.
Radiometric dating is based on ____
a. the presence of fossils b. cross-cutting relationships c. spontaneous decay of radioactive elements d. superposition e. dendrochronology