Which of the following practices contributes the least to antibiotic or pesticide resistance?
A. A person takes the full course of the appropriate antibiotic when she has a viral infection.
B. A person takes the full course of the appropriate antibiotic when she has a bacterial infection.
C. Domestic farm animals are fed low doses of antibiotics to increase weight gain.
D. Mosquito populations in the tropics have been sprayed with DDT for about 50 years.
E. A person takes an anti-malarial drug when he does not have malaria.
Answer: B
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From a geological perspective, what is a major potential problem with safeguarding a high-level nuclear waste repository deep underground at Yucca Mountain?
A. The difficulty in keeping it dry for 10,000 years. B. The challenge of protecting it from a meteorite impact. C. Assuring that it will not be eroded away by rising oceans D. The potential of harvesting by alien visitors.
Over which of the following areas does an ozone hole form annually during the southern hemisphere's spring?
A. Argentina B. Antarctica C. South Africa D. Australia
Universalizing religions are those that
A) spread through proselytization. B) are based on science rather than faith. C) people are born into as part of a cultural group. D) involve the worship of multiple gods.
Outside of Australia and New Zealand, the majority of the Pacific Island population is of _____ origin
a. Micronesian b. European c. Asian d. aboriginal e. indigenous