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Mediademics Mediademics
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6 years ago
If an isotope has a half-life of 4 billion years, then in 4 billion years what will happen?
 
  a. The original amount will have doubled.
  b. All of the original amount will have decayed.
  c. All of the original amount will still be present.
  d. Half of the original amount will still be present.
  e. A quarter of the original amount will still remain.
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andreasoadandreasoad
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