ECOLOGY
HUMANS AND THE BIOSPHERE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Native
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Invasive
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Annoying
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Parasite
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Detailed explanation-1: -When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Native wildlife may not have evolved defenses against the invader, or they may not be able to compete with a species that has no predators.
Detailed explanation-2: -No, actually only a small percent of introduced species ever become invasive. However, it is nearly impossible to predict which species will become invasive and new species are being introduced every day. Some species are present for many years before they exhibit invasive characteristics.
Detailed explanation-3: -Some (but not all) invasive species reproduce rapidly because in a new ecosystem they have no natural predators. As one famous example, the continent of Australia is practically overrun with rabbits in many areas.
Detailed explanation-4: -An invasive species is an organism that is not indigenous, or native, to a particular area. Invasive species can cause great economic and environmental harm to the new area.