The telegraphers studied by Bryan and Harter showed gradual improvement as long

as they operated at the level of letters and words. This lasted about how long?

(a) 6 hours (b) one day (c) 7 ± 2 days (d) 24 weeks
(e) the gradual improvement was permanent; they stayed at asymptote for
years

D

Psychology

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What percentage of sperm is capable of fertilization?

a. 1 b. 5 c. 10 d. 100

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