Disappearing Bees / Where have all the honey bees gone?, It is really hard to see them these days. , The bees are disappearing! , About a third of the bee population dies every year. , This is bad news for bees, but it’s even worse news for people., Bees are very helpful to humans. , First, bees give us honey. , Honey is a truly wonderful food. , It is good for our health and tastes great. , Honey can last almost forever. , In fact, honey from ancient Egypt can be eaten today! , Second, bees help produce many crops such as apples and strawberries. , These crops cannot be produced by themselves. , They need the help of bees. , Bees help in the process of pollination., How bees help pollination, What is pollination?, It is moving pollen from one flower to another to make seeds., What is pollen?, It is a fine yellow powder produced by flowers. , Why are bees disappearing? , One of the reasons is climate change. , Global warming has brought extremely hot and cold weather. , Bees cannot survive in these conditions. , Another reason is the harmful chemicals farmers use on crops. , These chemicals kill not only bad insects, but also good insects, like bees., Then what can we do to help our little yellow friends? , First, we can plant more flowers and trees. , This will provide a good environment for bees to live in. , Also, trees help slow down global warming. , Second, the use of harmful chemicals on crops must be stopped. , These chemicals are unhealthy for bees and people. , Our little friends need our help. , Let’s not let them down!,

중3 동아(이병민) 2과. 본문_Reading

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？