What Do Living Things Need?

生物需要什么? · P3 Science · Pages 9–13
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🟢 Paragraph 1 · Living Things Need Water 生物需要水
All living things need water to survive. We need water to carry out our daily activities. We need water to digest food. We need water to remove waste from our body. Plants need water to make food. When you feel thirsty, it can mean that your body needs more water. Generally, humans can survive without water for up to three days.
所有生物都需要才能生存。我们需要水来进行日常活动。我们需要水来消化食物。我们需要水来排出身体中的废物。植物需要水来制造食物。当你感到口渴时,可能意味着你的身体需要更多的水。一般来说,人类最多可以在没有水的情况下生存三天。
💡 记忆4个需要水的原因:①日常活动 ②消化食物 ③排出废物 ④植物制造食物
🟢 Paragraph 2 · Living Things Need Food 生物需要食物
All living things need food. Food provides living things with energy. We eat food such as rice, meat, vegetables and fruits. Cows graze on grass for food. Plants do not need to eat food. Plants can make their own food when there is light. A young plant uses sunlight and water to grow. In the first few months of life, babies only drink milk and do not eat any solid food.
所有生物都需要食物。食物为生物提供能量。我们吃米饭、肉类、蔬菜和水果。奶牛靠吃草获取食物。植物不需要进食。当有光时,植物可以自己制造食物。幼苗利用阳光和水来生长。在生命的最初几个月里,婴儿只喝奶,不吃固体食物。
💡 植物是唯一能自己"做饭"的生物——它们用阳光当"炉子",水和空气当"食材"!
🟢 Paragraph 3 · Living Things Need Air 生物需要空气
Most living things that live on land need air to survive. Living things breathe in air that contains oxygen. Without air, both plants and animals will die. A boy swimming underwater wears a mask with an air outlet. Mountain climbers going to the top of Mount Everest carry their own oxygen tanks because there is very little oxygen in the air at the top of the mountain. All living things need water, food and air.
大多数在陆地上生活的生物都需要空气才能生存。生物吸入含有氧气的空气。没有空气,植物和动物都会死亡。水下游泳的男孩需要戴面罩。攀登珠穆朗玛峰顶部的登山者自带氧气罐,因为山顶的空气中氧气非常少。所有生物都需要食物空气
💡 空气并不只是空的——它里面有氧气,这是生物生存的关键!
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