What is the shortest wavelength of radiation?
A. ultraviolet
B. visible
C. infrared
D. microwave
E. X-ray
A
Environmental & Atmospheric Sciences
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A baseball is tossed by a lone astronaut floating in outer space. If the ball moves away at 20 m/s, the speed of the astronaut in the opposite direction is
A. more than 20 m/s. B. 20 m/s. C. less than 20 m/s. D. more information needed
Environmental & Atmospheric Sciences
Nitrates and phosphates are examples of
A. infectious agents. B. oxygen-demanding wastes. C. heavy metals. D. plant nutrients. E. sediment.
Environmental & Atmospheric Sciences
The majority religion of North Africa is
A) Islam. B) Lutheranism. C) Catholicism. D) Baptist. E) Judaism.
Environmental & Atmospheric Sciences
Which of the following biologically important compounds is chiral?
A) 2-aminopropanoic acid B) 2,3-dihydroxypropanoic acid C) 3,5-dihydroxy-3-methylpentanoic acid D) all of them
Environmental & Atmospheric Sciences