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Why rabbits imported to Australia destroyed the grasslands there rabbits in the US are not destroying grasslands there?
Wiki User
∙ 13y ago
Because in Australia, there are no natural predators that would otherwise control the rabbit population. As a result, the rabbit population in Australia spreads so rapidly that the vegetation they eat gets eaten up. In the USA, there are natural predators like bobcats, lynx, coyotes, wolves, foxes, hawks, eagles, etc. that are abundant enough to control the rabbit and hare population and thus prevent the natural grasslands from being destroyed.
Wiki User
∙ 13y ago
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What restricts the amount of a product that can be imported?
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