Hormones are distributed throughout the body
by the ____ system.
a. exocrine
b. lymphatic
c. nervous
d. circulatory
e. integumentary
D
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Which of the following sources of pollution is considered a point source? a. Oil dripping from cars as they cross the railroad tracks
b. Runoff from farm fields during the heavy spring rains draining into the Mississippi River. c. None of these choices. d. Air pollution in an industrialized city. e. Municipal water treatment plant discharging into the river.
The process of gas exchange in parabronchi is similar to:
a. the surface of the gill filaments. b. the surface of the pleural membrane. c. the surface of the bronchioles. d. the surface of the alveoli. e. the surface of the gill filaments and the surface of the alveoli.
Which of these trends occurred first in hominid evolution?
A) large brain B) bipedalism C) tool use D) writing
A population in which the allele and genotype frequencies do not change over time is said to be in:
a. genetic stasis. b. allele balance. c. genetic equilibrium. d. population stability. e. phenotype equilibrium.