Approximately how many different proteins are found in a typical cell?
A) 900
B) 9000
C) 100,000
D) 1,000,000
B
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Why are oxygen and water the two main components involved in chemical weathering?
A) They are extremely rare. B) They are among the most abundant and easily bonding molecules on earth. C) They are very good at it, so they do it a lot. D) Nothing else can chemically alter minerals.
Describe the three types of plate boundaries and the motions that lead to them.?
What will be an ideal response?
Dry growth of a hailstone occurs in an environment
A) where repeated trips are made through a cloud. B) where the temperature is well below freezing. C) with weak upper-level winds. D) where the temperature is near freezing.
Which of the following best describes the properties of the elements?
A) Chemical and physical properties vary in a systematic way as one moves across a row of the periodic table. B) Chemical and physical properties vary in a systematic way as one moves down a column of the periodic table. C) both a and b D) neither a nor b