Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Q: Question: Radioisotopes may vary greatly in their rate of decay, decaying faster if their nuclei are more what? Answer: unstable

A: Different radioisotopes may vary greatly in their rate of decay. The more unstable their nuclei are, the faster they decay.
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Q: Question: He mass spectrometer measures the percent abundance of different what? Answer: isotopes

A: The mass spectrometer measures the percent abundance of different isotopes in a given sample.
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Q: Question: What term is used to describe birds that mate for an entire season or even stay paired for their entire life? Answer: monogamous

A:
These birds are pairing up so that they can produce offspring. Many birds are monogamous , keeping the same mate for an entire season. In some species, they even stay paired for their entire life.
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