One thunderstorm can spawn several tornadoes. Which of the following describes how these tornadoes occur?
A. in families
B. in repetition
C. in unison
D. in sequence
Answer: A
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Organisms that lack an internal, membrane-bounded nucleus:a
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Are the combinations of population growth rate and increase in rate of
water usage that you entered in Table ? reasonable? Explain. What will be an ideal response?
Striations are used to identify:
a. pyroxene b. plagioclase feldspar c. orthoclase feldspar d. quartz
Air and water pollution are directly responsible for the loss of some species. In their studies of these pollution effects, biologists have determined that ________ are especially sensitive to air pollution, and are now being used as an index of urban
air quality. A) songbirds B) lichens C) deciduous trees D) warblers E) evergreen trees