| Category | Format | Size |
|---|---|---|
| People's Education Press Second Grade Life Volume 2 | pptx | 6 MB |
"Flowers, plants and trees nod and smile" Make Home Better PPT Courseware 2
Description
"Flowers, plants and trees nod and smile" Make Home Better PPT Courseware 2
plants with medicinal value
Dandelion treats:
Lymphadenitis, boils, acute conjunctivitis,
Cold and fever, acute tonsillitis, acute bronchitis,
Gastritis, hepatitis, cholecystitis, urinary tract infection.
Licorice
The roots can be used as medicine
effect:
Detoxification
Eliminate phlegm and relieve cough
Scenario A: It’s time for school to end. The No. 11 bus that Xiao Ming is taking is parked on the other side of the lawn. You can get on the bus directly across the lawn. What should Xiao Ming do?
Scenario B: Spring is here, and the elm trees on campus are growing tender elm money. Xiaogang said, "Elm money is edible and tastes pretty good. Let's go pick some!"
Scenario C: Grandma said that eating dandelions has the effect of clearing fire. There are a lot of dandelions growing on the grass on campus. Xiaoli wants to dig some and take them home after class.
Scenario D: In spring, the lilacs bloom on campus. Qingqing wants to pick some lilacs and put them in a vase to give to the teacher.
Contributions of plants to humans
1. Use light energy to create oxygen. It is estimated that each hectare of forest and park green space releases 750 kilograms and 600 kilograms of oxygen per day respectively in summer. An adult breathes more than 20,000 times a day, inhales 15-20 cubic meters of air, and consumes about 0.75 kilograms of oxygen.
2. Fix CO2 and synthesize organic matter. Each hectare of forest and park green space can absorb a fixed 1050 and 900 kilograms of CO2 per day respectively. The concentration of CO2 in the earth's air 100 years ago was 0.028%, but now it is more than 0.036%. The concentration is increasing at an accelerated rate, and the greenhouse effect will cause sea levels to rise. , various disasters occur frequently.
3. Windproof and sand-fixing, accelerating dust reduction. Building protective forest belts in wind-damaged areas can reduce wind speed by about 30%; farmland with protective forest belts can increase yields by about 20% compared with those without. The hair-like structures on the large leaves of trees have a great adsorption effect on dust. It is estimated that on green streets, the dust content in the air is 56.7% lower than in areas without green areas, and the amount of dust above grass is only 1/6 to 1/3 of that on bare land.
4. Maintain soil and water and conserve water sources. In areas with lush forests, surface runoff only accounts for less than 10% of the total rainfall; a normal rainfall can intercept 15-40% of the rainfall; litter can hold 2-4 times its own dry weight in water; each hectare of forest The soil can store 640-680 tons of water; 50,000 acres of forest is equivalent to a reservoir with a storage capacity of 1 million cubic meters.
Keywords: Make Home Better Teaching Courseware, Flowers and Trees Nodding and Smiling Teaching Courseware, New People’s Education Edition Second Grade Morality and Life PPT Courseware, Second Grade Morality and Life Slide Courseware Download, Make Home Better PPT Courseware Download, Flowers and Plants Download the PPT courseware of Trees Nodding and Smiling, in .ppt format
For more information about the PPT courseware "Make Home Better with Flowers, Plants, and Trees Nodding and Smiling", please click on the "Make Home Better" ppt with Flowers, Plants, and Trees Nodding and Smiling ppt tag.
"Flowers, plants and trees nod and smile" Make Home Better PPT Courseware 3:
"Flowers, Plants and Trees Nodding and Smiling" Make Home Better PPT Courseware 3 Flowers, plants and trees have provided us humans with a lot of useful help. What can we do for flowers, plants and trees? do you know? March 12th every year is China’s Arbor Day. Do you have any other good ideas for protecting the environment? ..
"Flowers, plants and trees nod and smile" Make Home Better PPT courseware:
"Flowers, Plants and Trees Nodding and Smiling" Make Home Better PPT Courseware Green Action Flowers, plants and trees have provided us humans with a lot of useful help. What can we do for them? do you know? March 12th every year is China’s Arbor Day. What else do you have to protect the green...
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Update Time: 2024-09-20
This template belongs to Morality and life People's Education Press Second Grade Life Volume 2 industry PPT template
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