植物靠空气和水生长
Plants Grow from Air & Water
支持一个观点：植物生长所需的物质主要来自空气和水，而不是土壤。
Support an argument that plants get the materials they need for growth chiefly from air and water, not from the soil
学习证据 / Evidence
- 解释植物从空气中吸收二氧化碳、从土壤中吸收水分，来制造食物（光合作用）。
- 论证植物的大部分质量来自空气（二氧化碳）和水，而不是土壤中的矿物质。
- 描述一个简单的探究实验：在植物明显生长的同时，土壤质量几乎没有变化。
- Explain that plants take in carbon dioxide from air and water from soil to make food (photosynthesis)
- Argue that most of a plant's mass comes from air (CO₂) and water, not soil minerals
- Describe a simple investigation showing soil mass barely changes while a plant grows significantly
评估问题 / Assessment
如果{{name}}已经知道植物需要水和阳光，还能否进一步解释植物的大部分“建筑材料”实际上来自空气和水，而不是泥土？
If {{name}} knows plants need water and sunlight, can they also explain that most of a plant's 'building material' actually comes from air and water rather than dirt?