On which body (other than Earth) is life in our solar system most likely to be found?
A. Europa
B. Mars
C. Venus
D. There is no evidence of any kind that life will be found anywhere in our solar system. We will have to look farther.
Answer: A
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Which of the following is a common setting for a spring?
A) A limestone aquifer that intersects the surface B) A permeable upper layer with a water table deep below the surface C) A nonpermeable upper layer with a water table deep below the surface D) An unconfined aquifer with a water table deep below the surface
What do wastewater treatment facilities primarily depend upon for the breakdown of pathogenic organisms and organic materials in wastewater?
A) Large amounts of chlorine bleach B) Decomposers and detritus feeders C) The neutralizing effects of high levels of oxygen D) Large amounts of antibiotics and disinfecting chemicals
Which of the following is true of enzymes?
A) They shift the position of a chemical equilibrium. B) They speed up the rate of a chemical reaction. C) both a and b D) neither a nor b
At 0 Kelvin, ________
A) water boils B) ice forms C) ice melts D) water freezes E) molecular motion stops