The yearly rate of tectonic plate movement is best measured in
A. meters.
B. centimeters.
C. kilometers.
Answer: B
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Integrated pest management ____ than pesticides.
A. is more labor intensive B. is faster acting C. requires more fertilizer and irrigation D. is less environmentally sound E. is easier to use
The troposphere is the atmospheric layer where
A) ozone absorbs incoming ultraviolet radiation from space. B) the Aurora Borealis occurs. C) weather occurs. D) temperature increases with altitude.
Which of the following correctly describes the interactions between antigens, class I MHC molecules and T cells?
A) Antigens bound to class I MHC molecules and interact with helper T cells B) Antigens bound to class I MHC molecules and interact with killer T cells C) both a and b D) neither a nor b
Which of the following describes immunoglobulins?
A) They all proteins containing only amino acids. B) They are all glycoproteins. C) They are all lipoproteins. D) Some immunoglobulins belong to each of the above categories.