Pasteurization of milk is an example of a disease control measure aimed at
A) preventing host-to-host transmission.
B) controlling the disease vector.
C) preventing common source diseases.
D) eliminating the disease reservoir.
Answer: C
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The part of the eye that controls the size of the pupil is the
a. cornea
b. iris
c. lens
d. vitreous humor
Even though bacteria lack membrane-bound organelles, such as chloroplasts and mitochondria, they
can still perform the functions of these organelles by localizing certain metabolic enzymes on: a. the nuclear membranes. b. the endoplasmic reticulum. c. the plasma membrane. d. ribosomes. e. the cell wall.
Increasing population density on marginal lands in rural areas has resulted in desertification, which reduces the ability of the land to sustain the population
Indicate whether the statement is true or false
Human birth rate peaked in the 1980s and has been slowly declining ever since. How is this expected to affect our population size over the next several decades?
A) The human population size will begin to decline. B) The human population size will continue to increase, but not as fast as before. C) The human population size will level off. D) The human population size will continue to increase at the same rate it has for the past 100 years.