入侵物种

了解入侵物种是指被引入到某个并非其自然栖息地的动物（或植物），例如灰松鼠在英国与红松鼠竞争并胜出、甘蔗蟾蜍毒杀澳大利亚本土捕食者、兔子破坏澳大利亚的生态系统等。入侵物种会通过争夺食物、传播疾病或因为没有天敌等方式，对本土野生动物造成严重危害。

Understand that invasive species are animals (or plants) that have been introduced to a place where they don't naturally belong — like grey squirrels outcompeting red squirrels in the UK, cane toads poisoning native predators in Australia, or rabbits devastating ecosystems in Australia — and that they can cause serious harm to native wildlife by competing for food, spreading disease, or having no natural predators

学习证据 / Evidence

• 能够将入侵物种定义为被引入新环境的非本土动物
• 能说出至少2个入侵物种的例子及其影响
• 能解释入侵物种有害的至少2个原因（没有天敌、与本地物种竞争、传播疾病）
• 能理解物种自然扩大分布范围与被人为引入之间的区别

• Defines invasive species as non-native animals introduced to a new environment
• Names at least 2 examples of invasive species and their impacts
• Explains at least 2 reasons invasive species are harmful (no predators, outcompete natives, spread disease)
• Understands the difference between a species naturally expanding its range and being introduced by humans

评估问题 / Assessment

如果{{name}}了解到灰松鼠是从美国带到英国的，他们能解释为什么引入的动物会对原本生活在那里的动物造成问题吗？

If {{name}} learns that grey squirrels were brought to the UK from America, can they explain why introduced animals can be a problem for the animals that were already living there?