Loud noise heard for too long will damage your hearing. For example, hearing a continuous noise at 90 decibels may damage hearing within how many hours??
A) ?2
B) ?4
C) ?8
D) ?10
C
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If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time, what is true of the sailboat's acceleration?
A. it is positive B. it is negative C. it is equal to zero D. it is equal to 2 knots/hr
Which of the following structures serves to store sperm?
A. Prostate B. Seminal vesicles C. Seminiferous tubules D. Epididymis E. Spermatic cord
Ketonuria usually indicates abnormal metabolic processes that may be due to ________
A) diets very low in carbohydrates B) a transfusion reaction C) hepatitis or other liver pathologies D) obesity and gross overeating
During birth, an infant is normally stimulated to breathe by ________
A) CO2 accumulating in the baby's blood B) prostaglandins C) an increased O2 level in the baby's new environment D) surfactant E) being spanked by the doctor