Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Radioactivity is the release of particles and/or energy from the nucleus of an atom.

A: What is the release of particles and/or energy from the nucleus of an atom described as?
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Q: Induced or spontaneous are the two methods in which mutations arise in dna.

A: What are the two methods in which mutations arise in dna?
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Q: Humans are unique in their ability to alter their environment with the conscious purpose of increasing carrying capacity, which acts as a limiting factor on populations in general.

A:
Humans are unique in their ability to alter their environment with the conscious purpose of increasing what, which acts as a limiting factor on populations in general?
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