昆虫在生态系统中的作用

昆虫在生态系统中扮演着多种角色：传粉者（蜜蜂、蝴蝶、食蚜蝇）、分解者（蜣螂、蝇类幼虫）、鸟类、蝙蝠、鱼类和青蛙的食物来源，以及害虫天敌（瓢虫吃蚜虫）。思想实验：如果所有昆虫都消失了，会发生什么？

Insects in ecosystems: the many roles insects play. Pollinators (bees, butterflies, hoverflies), decomposers (dung beetles, fly larvae), food source for birds, bats, fish, and frogs, and pest controllers (ladybirds eating aphids). The thought experiment: what would happen if all insects disappeared?

学习证据 / Evidence

• 说出昆虫至少三种不同的生态角色，例如传粉者、分解者和食物来源
• 解释像蜜蜂这样的某一类昆虫消失后，会如何影响植物、其他动物和人类
• 描述一个昆虫作为害虫天敌的具体例子，例如瓢虫控制蚜虫数量

• Name at least three different ecological roles that insects play such as pollinator, decomposer, and food source
• Explain how the removal of one insect group like bees would affect plants, other animals, and humans
• Describe a specific example of insects as pest controllers such as ladybirds controlling aphid populations

评估问题 / Assessment

如果你问{{name}}：假如明天全世界所有的昆虫都消失了，会发生什么？{{name}}能否解释由此给植物、动物和人类带来的一连串问题？

If you asked {{name}} what would happen if all the insects in the world disappeared tomorrow, could they explain the chain of problems that would cause — for plants, animals, and people?