What is the environmentally unfriendly component of chlorinated fluorocarbons that ultimately damages ozone?
A) chlorine atoms
B) fluorine atoms
C) carbon atoms
D) molecular fragments of carbon and fluorine
E) all of the above
A
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Using blood tests and statistical sampling, medical researchers at New York City's Mount Sinai School of Medicine found that it is likely that nearly every person on the earth has detectable levels of ____ in their bodies.
A. hazardous chemicals B. carcinogens C. petrochemicals D. DDT E. persistent organic pollutants (POPs)
Zinc, Zn, is more easily oxidized than copper, Cu. Two strips of these metals are placed within separate salt solutions and then connected by a wire. Does an electric current pass through this wire?
A. No, an electric current does not pass through the wire because this would result in a prohibitive buildup of charge. B. Yes, as the zinc is oxidized in the salt solution, its released electrons pass through the wire producing an electric current. C. Yes and No. The passage of an electric current depends on whether the salt solutions are sufficiently concentrated to cause the oxidation of the zinc metal. The answer is yes only if the salt solution concentration is greater than 1M. D. There is insufficient information given to know. The passage of electric current depends on three things: the size of the plates, the concentration of the salt solution, and the gauge of the wire.
What are the other factors, besides increasing CO2 concentrations, which affect global warming?
What will be an ideal response?
The Ural Mountains are found in which world region?
a. Europe b. Russian Federation c. South America d. Southeast Asia