The age of the Earth according to modern estimations is about
A. 4.6 billion years.
B. 1.5 billion years.
C. 8 billion years.
D. a few thousand years.
E. 3.5 billion years.
Answer: A
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A) Yes: If we give antibiotics properly, resistance will go away and not evolve again. B) No: Bacteria need to become resistant to anything that will kill them. C) No: However, by using antibiotics properly, we can slow the rate at which resistance appears. D) Yes: If we stop using antibiotics, the trait will disappear.
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