Please answer the following question: Answer the following question given this paragraph: Humans have caused many extinctions by introducing species to new places. For example, many of New Zealand's birds have adapted to nesting on the ground. This was possible because there were no land mammals in New Zealand. Then Europeans arrived and brought cats, foxes, and other predators with them. Several of New Zealand's ground nesting birds, such as this flightless kiwi, are now extinct or threatened because of these predators. Q: What can ultimately result when species are introduced to a new place and prey on other species? Choices: - depletion - over population - elimination - extinction A:
Answer:
extinction