The destruction of the ozone layer is caused by a chemical reaction between UV light and
A) hydrogen sulfide.
B) methane.
C) chlorofluorocarbons (CFCs).
D) nitrogen.
E) helium.
C
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In which ponds did male guppies have the narrowest range of variation in the number of spots?
a. ponds with no predators b. ponds with cichlids c. ponds with killifish
If an individual was interested in eating a healthy breakfast that would provide them with energy for the entire day the breakfast should include which of the following foods?
A. Whole grain cereal with 4 ounces of milk. B. Scrambled eggs and refried beans. C. Two pieces of whole grain toast made with refined wheat flour. D. Two slices of bacon and one scrambled egg. E. All of the choices would provide energy for the entire day.
Which type of microscope has the best resolution?
A) An electron microscope B) A modern light microscope C) Leeuwenhoek's microscope D) Hooke's microscope
The pneumonia caused by the influenza virus results from the accumulation of fluid and cell debris in the lungs. This occurs during the lysogenic life cycle of the virus.
Answer the following statement true (T) or false (F)