Reservoirs include ________.
A. animals
B. soil
C. water
D. humans
E. All of the choices are correct.
Answer: E
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It is currently estimated by the American Cancer Society that only about 10% of all people with melanoma have a family history of the disease. What factors might contribute to the development of melanoma in the other 90% of patients?
A. exposure to solar radiation B. mutations in a melanocyte C. exposure to environmental mutagens D. All of the answer choices are correct. E. None of the answer options is correct.
Twins produced by embryo splitting ____ in their DNA sequence
a. are identical to one another b. are identical to the opposite parent c. must be identical to the same parent d. must be identical to at least one parent e. are not identical to each other
Which one of the following is the major energy storage compound of plant seeds?
A. amylose B. glycogen C. cellulose D. lipids E. oils
Once supported by a predictable experimental outcome, a scientific hypothesis
a. still cannot be considered to have been proven true. b. can be used to predict the outcome of all future similar events. c is elevated to the status of theory. d. is never reexamined.