Why can invasive species dedicate more energy to growth and reproduction in new environments?

Answer

They often arrive without the natural predators, parasites, or diseases that kept their populations in check in their home ranges

In their introduced habitats, invasive species usually lack the natural checks like predators, parasites, or diseases that controlled their numbers in their native ranges, allowing them to allocate more energy toward growth and reproduction rather than defense.

Why can invasive species dedicate more energy to growth and reproduction in new environments?
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