标题：The Food Chain
章节概要
- 植物与食物：阐述植物为了生存需要食物，且绿色植物能制造食物，制造食物需要空气、水和阳光，大多数植物还需要土壤。
- 动物与食物：说明动物为了生存也需要食物，有食草动物（植物食者）和食肉动物（肉食者），它们都是食物链的一部分。
- 食物链示例：以一个具体的食物链（植物 - 蚱蜢 - 青蛙 - 鱼 - 小熊）为例，展示食物链的构成，该食物链有五个部分。
详细内容
All plants need food in order to live. Green plants make food. They need air, water and sunlight to make food. Most plants need soil, too. All animals need food in order to live. These animals eat plants. They are called plant - eaters. These animals eat other animals. They are called meat - eaters. Plant - eaters and meat - eaters are part of a food chain. Most food chains begin with plants. The plants make food which animals eat. Let's look at a food chain. A grasshopper eats the leaves of a plant. The grasshopper grows bigger. A frog eats the grasshopper. The frog grows bigger. A fish eats the frog. The fish grows bigger. A small bear catches the fish. The bear eats the fish. The bear grows bigger. This food chain has five parts. The green plant is the first part. The grasshopper is the second part. What are the other parts?
总结
这段文本主要围绕食物链展开，先分别介绍了植物和动物与食物的关系，然后详细展示了一个由五部分组成的食物链示例，整体阐述了食物链相关的知识。