"What Can We Do for the Earth" PPT Courseware for Humanity's Home Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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"What Can We Do for the Earth" PPT Courseware for Humanity's Home
Activity 1 Our life and environment
What can you discover from the above statistical results? Based on the average we just calculated, how many resources will be consumed in the homes of all our classmates in a month? What about a year?
Ask students to think about what resources are needed for paper production? What wastes are emitted during paper production?
Phase One: Deforestation.
The main raw materials for papermaking come from forests. The first step in paper production is to clear forests. Experts calculate that 17 trees are needed to make one ton of paper. The more forests are cut down, the more serious the soil erosion will be. At worst, farmland will turn into wasteland, and at worst, patches of desert will appear on the earth.
The second stage: pulping.
Pulping is the processing of raw materials for papermaking, including wood processing, pulping, screening, washing, thickening, bleaching and other processes. The process of peeling and crushing trees will produce liquid waste and solid waste. The wastewater produced by the pulping process mainly includes waste cooking liquid, bleaching chemicals, organic sulfides, dirt washed from lime residue, etc. The exhaust gas produced is an unpleasant odor. Some solid waste is also generated during the screening and washing processes.
The third stage: paper making.
Including pulp slurry processing, paper machine operation, finishing and other processes. Pulp processing produces very little wastewater, but the operation of paper machines produces wastewater containing a large amount of suspended solid matter - "white water". Wastewater containing glue, inks, waxes, lubricants and other additives is also produced. Papermaking will not only consume a lot of wood, but also consume a lot of water resources.
Activity 2: Keep the greenness of nature
Operation to protect the mother river
The "Protect the Mother River Action" takes the theme of protecting the "Mother River" that nurtures the Chinese nation and people - the Yellow River, the Yangtze River and other major rivers. It widely mobilizes youth league organizations at all levels and young people, fully absorbs social resources, and works on the "Mother River" "The river basin vigorously carries out afforestation, controls water and soil erosion, and protects the ecological environment. The main contents of this action include: building the "Mother River Protection Project", carrying out the "Mother River Protection Action Week (Day)" activities, and creating the "Mother River Protection Fund".
(1) Do you know what human behaviors can cause soil erosion and desertification? How can these behaviors be reduced and avoided?
(2) As consumers, how do you protect the greenness of the earth in your life?
(3) In addition, what other positive measures can you take to contribute to the greening of the motherland’s rivers and mountains? And classify the measures according to the difficulty of implementation, such as: those that can be done at any time, those that can be done in the near future, those that can be done with future efforts, and those that are difficult to do.
Due to indiscriminate deforestation and grassland cultivation, water and soil erosion are becoming increasingly serious, and desertification continues to expand, making the earth less and less green. We must start from the reality of our own lives and keep the earth green by reducing the consumption of forest resources and actively participating in actions to build a better environment.
After understanding the various methods of saving water, we must use the knowledge we have learned to guide our lives, learn to save resources and reduce waste of resources in real life.
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