Question

Human Population projects are subject to change due to

Answer 1

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Human Population projects are subject to change due to fluctuations in global fertility and mortality rates.


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Answer 2

Human population projects are subject to change due to global fertility and mortality rates. Fertility in women can decrease (or increase which would cause a higher pop), causing a lower population. Mortality rates can increase, which would cause more death on a higher scale (and vice versa).