Ladies and gentlemen：
Good morning！ Today， the title of my speech is A Lesson Nature.
Around us，there are plants，animals and many other live in nature，so to keep the balance of nature is very important for today, too many trees are still being cut down in many countries and flood all over the world are getting more and more serious，A lot of land has gone with is a lesson nature.
When people move into a new place，they often cut down trees or pull out many wild plants to make don’t know that trees can stop flood and wind washing or blowing the earth away， and that many of these wild plants are food for some wild the animals can’t find enough plants to eat， they will die or have to leave the place.
In one part of the United States，for example，the deer there like to eat a kind of wild mountain tigers there eat the people killed many mountain tigers to protect the there were so many deer that the ate up all the wild the deer began to eat the green leaves of the young trees the farmers thought of ways to protect their trees，then the deer had nothing to eat and many of them died.
The number of trees，deer, tigers， wild flowers and plants has changed much—less and need to do more to keep the balance of nature.
Thank you！
