What is currently the most crucial way of reducing incidence of dengue, yellow fever, chikungunya, and Zika?
A) educate the public about safe sex and condom use
B) increasing the availability of current vaccines
C) avoid areas with high prevalence of these diseases
D) control mosquito levels
E) providing better quality health care
Answer: D
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Which type of viruses generally has the smallest genome?
A) bacteriophage B) DNA viruses C) RNA viruses D) viroids
Why is it that there is less variation among individuals in any one non-African population than among individuals in the contemporary African population?
A. Because the individuals that left Africa were a relatively small sample of the total amount of variation present. B. Because the individuals that left Africa exhibited a greater number of mutations than the African population. C. Because the African population was larger than the populations that left, they had more mutation. D. There is no reason because the above statement is incorrect.
Gymnosperms are the most ecologically diverse plants on Earth
a. True b. False
Which of the following digestive fluids contains the main enzymes that digest carbohydrates, fat, and proteins in a meal?
a. Stomach b. Bile c. Salivary d. Pancreatic