In DNA cloning, __________ cut DNA into pieces.
Fill in the blank(s) with the appropriate word(s).
restriction enzymes
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As much as 50 percent of a soil’s volume is
a. air. b. iron. c. manganese. d. water.
You are generally not aware of the texture of the cloth of your shirt as it rests on your shoulders, unless someone or something happens to make you think of it. What part of the brain is responsible for filtering out such stimuli?
A) reticular activating center B) primary motor area C) postcentral gyrus D) cerebellum
El Niño-Southern Oscillation has resulted in:
a. global weather changes. b. increases in the fish populations off South America. c. cooling of surface waters of the East Pacific. d. upwelling in many places. e. global warming.
If we wished to reduce global climate change, which of the following would not be targeted for reduction?
A) nitrous oxide B) nitrogen C) carbon dioxide D) methane