Which acid is a severe air pollutant?
a. carbonic acid
b. nitric acid
c. hydrofluoric acid
d. hydrochloric acid
e. boric acid
B
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Which of the following kinds of animals are NOT crustaceans?
A. krill B. barnacles C. ostracods D. pill bugs E. scorpions
The close proximity of capillaries to the alveoli in lungs improve respiratory efficiency by ______.
A. decreasing the distance for diffusion B. changing the diffusion constant C. increasing the concentration difference D. increasing the surface area for diffusion
Companion cell assisted loading of organic compounds is indicated by letter ____
a. A b. B c. C d. D
e. EThe vertical dive of a moth for cover when it hears the ultrasound chirps of an approaching bat is an example of a(n)
A. sign stimulus. B. innate releasing mechanism. C. kinesis. D. supernormal stimulus. E. fixed action pattern.