One particular feature found in bony fishes but is absent in cartilaginous fishes is ________.
A. a swim bladder
B. gills
C. a pectoral fin
D. a skeleton
E. scales
Answer: A
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Indicate whether the statement is true or false.
________ and high moisture increase the decomposition rate of organic matter.
A. High sunlight B. High parent material C. High pH D. High temperatures
If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by
A) 10 m/s. B) 20 m/s. C) 30 m/s. D) 40 m/s. E) depends on its initial speed
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