The park is so large that wolves will not need to venture into areas frequented by people.
Rabies is very rare in wolves, and there have been no verified cases of serious human injuries from nonrabid wild wolves since records have been kept.
Ranchers in the region near the park have expressed concern that gray wolves, if reintro- duced, would sometimes prey on their livestock.
Predation by gray wolves on elk in the park is likely to improve the health and viability of the park s elk population as a whole by reducing malnutrition among the elk.
Wolves do not prey on animals of any endangered species that currently inhabit the park.
8. Osteoporosis is a disease that reduces bone mass, lead- ing to fragile bones that break easily. Current treat- ments for osteoporosis such as estrogen or calcitonin help prevent further loss of bone but do not increase bone mass. Since fluoride is known to increase bone mass, administering fluoride to osteoporosis patients would therefore help make their bones less susceptible to breaking. Which of the following, if true, most seriously weakens the argument above?
Most people who suffer from osteoporosis are not aware that administration of fluoride can increase bone mass.
Fluoride is added to drinking water in many locations in order to strengthen the teeth of people who drink the water.
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