E-PolyLearning

46. Approach in which disastrous diseases are being controlled using appropriate methods is
a. Integrated disease management
b. retrograded disease management
c. transmission disease management
d. sensory disease management
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Answer: (a).Integrated disease management

47. In 1797, vaccination was first developed by
a. Edward Jenner
b. F. Sanger
c. F.Miescher
d. Erwin
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Answer: (a).Edward Jenner

48. Older sediment layers have less radioactive isotopes than
a. upper layer
b. younger layer
c. older layer
d. deeper layer
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Answer: (b).younger layer

49. An organic molecule is a type of molecule in which a molecule is composed of
a. hydrogen
b. carbon
c. carbon and hydrogen
d. oxygen
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Answer: (c).carbon and hydrogen

50. A statement which is given after observations and organizing data is called a
a. reasoning
b. result
c. hypothesis
d. experiment
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Answer: (c).hypothesis