Chinese in the second volume of the fourth grade, lesson 19, lark's wish, question 5, after class. Why are forests so important?

Because trees can produce oxygen, absorb carbon dioxide and control the greenhouse effect, and forests are "aggregates" of trees, so forests have a very important environmental role.

The role of forest in the lesson of the lark's wish;

1, protect water and soil resources.

2. As a "forest reservoir", prevent floods.

3. Strong water storage capacity.

It is a huge air conditioner to adjust the climate.

The article "The Wishing of the Lark" has 15 natural paragraphs, which can be divided into four parts according to the location where the Lark flies.

The first part (1-4 natural section) is about people cutting down trees, destroying forests and turning forests into deserts; The second part (5- 10 natural section) is about people cutting down trees, destroying forests and flooding rivers; The third part (1- 13 natural section) is to write that the forest is a huge air conditioner; The fourth part (14- 15 natural section) is to write that it is lark's wish to turn the desert into an oasis.

The content of this paper revolves around the sentence "the forest is so important", and environmental protection knowledge is included in an interesting story in the form of a dialogue between a lark and its mother.

Whether the text is about cutting down trees, destroying forests, turning forests into deserts and flooding rivers, or writing that forests are a big reservoir and a huge air conditioner, it is all to highlight the importance of forests.

In this paper, paragraphs 10 and 13 describe that forests have the functions of water storage, soil conservation and temperature regulation, and compare forests to reservoirs and air conditioners.