Which of the following is true of the monomeric units which react to form Kevlar?
A) They are both 1,4-disubstituted benzene derivatives.
B) They are both 1,3-disubstituted benzene derivatives.
C) They are both 1,2-disubstituted benzene derivatives.
D) None of the above is true.
A
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Indicate whether this statement is true or false.
Roundup Ready corn is a transgenic crop that is resistant to the herbicide Roundup (glyphosate). What is the main reason that farmers would want to plant Roundup Ready corn?
A) Water supplies are often contaminated with Roundup, which typically kills corn. Such contaminated water can be used only on Roundup Ready crops. B) Farmers can use Roundup on the weeds in their cornfields without killing their corn. C) Roundup Ready corn produces its own herbicide, which would kill nearby weeds without the farmers having herbicides on their fields. D) Many farmers have problems with airborne Roundup drifting in from nearby farms, and Roundup Ready corn would be protected from such airborne herbicide.
Weather reports of wind express only the horizontal motion of the air. The vertical component of the air motion is usually:
A) about the same. B) very much slower. C) much faster. D) only slightly slower. E) No general statement can be made.
The most volcanically active body in the solar system is ________
A) Mars B) Io C) Ganymede D) Earth