Which of the following statements about polymer decomposition and combustion is incorrect?
a. The surfaces of some polymeric products tend to char as they burn.
b. Burning polymeric products are only capable of releasing minimal heat.
c. Burning polymeric products can evolve voluminous amounts of smoke, carbon monoxide, and other hazardous gases, vapor, and fumes.
d. Polymers frequently undergo thermal degradation into simpler chemical substances.
B
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_______ is caused by an inadequate supply of blood to the heart _______
Fill in the blank(s) with the appropriate word(s).
What is the difference between a nephrologists and an urologist?
a. A nephrologists specializes in diagnosing and treating kidney conditions; the urologist specializes in diagnosing and treating conditions of the urinary tract and the male reproductive system. b. Nephrologists specialize in diagnosing and treating kidney conditions and the male reproductive system; urologists diagnose and treat conditions of the urinary tract. c. The terminology is different but there is no difference between these two specialties. d. Nephrologists treat nervous system conditions and Urologists treat urinary tract infections.