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Which is fine, but this is how the word is used in research.
Right. But the right words would be decline of birth rate, not fertility.
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Nope, that's just the usage you're familiar with.
From Wikipedia: "Fertility refers to the actual production of offspring, rather than the physical capability to reproduce, which is termed fecundity."
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I guess l am wrong, then.
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Colloquial usage often differs slightly from technical and leads to misunderstandings.
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Just like the metric and standard on the nasa project lol
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Yep. Neither one's objectively wrong, but they aren't the same.
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