Global warming, carbon dioxide. Climate change is short-lived.

You must first understand your writing intention. If this paper is to arouse people's awareness of hardship, economy and protection, you can write it like this.

1. Beginning: Advocating low-carbon life In recent years, energy shortage and environmental pollution have become the focus of world attention. Low-carbon life, low-carbon economy and low-carbon life have been attracting people's attention for many years. Developing a low-carbon economy marked by low energy consumption and low emissions and realizing sustainable development are also becoming the common choice for economic development of all countries in the world.

Two. middle

1. put forward arguments (for example, the increase of carbon dioxide leads to the impermanence of climate change. "Possible impacts of climate change: global warming has both advantages and disadvantages, the natural environment and the economy. Glaciers melt and expand, and the sea level rises significantly. How dangerous the coastal plain is when the coastline retreats and the ground is flooded. Agricultural changes are more complicated, drought is aggravated, and accumulated temperature is increased. The output per unit area increases at high latitudes and decreases at low latitudes. Evaporation intensifies runoff reduction, and the contradiction between supply and demand of water resources is obvious. " Use these words as the material of your argument and expand it.

Material: 1. More forest fires

Global warming not only makes glaciers melt, hurricanes wreak havoc, but also intensifies forest fires. In the past few decades, more forest fires have occurred in the western States of the United States, affecting a wider range. Scientists have found that the rising temperature and the premature melting of snow and ice are all related to wildfires. Due to the early melting of ice and snow, the forest area becomes drier and the drying time becomes longer, which increases the possibility of fire.

2. The historical sites were completely destroyed.

Global warming is likely to completely destroy civilization and historical sites. Rising sea levels and worse weather may destroy these irreplaceable historical sites. At present, the flood caused by global warming has destroyed the 600-year-old ancient city of Sukhothai, which was once the capital of the ancient Thai dynasty.

Step 3 "bounce" mountains

Ordinary climbers may not notice that the heights of the Alps and other mountains have experienced a slow rebound process in the past century due to the melting of snow and ice on the top of the mountain. For thousands of years, these icebergs have been squeezing the surface for a long time, resulting in the suppression of the surface. As the glaciers melt, the weight of the ground decreases and the ground slowly rebounds. Because global warming has accelerated the melting of glaciers in recent years, the rebound speed of these mountains has accelerated.

4. Faster satellites

The increase of carbon dioxide changes the density of atmospheric ionosphere, which will have a certain impact on satellites operating in this layer. Due to the rising content of carbon dioxide in the atmosphere, low-altitude carbon dioxide molecules release heat when they collide, which leads to the warming of the air. At high altitude, carbon dioxide molecules are thin, and the chances of colliding with each other are not frequent enough, so the heat radiates to the surrounding area, cooling the surrounding air (the temperature of ionospheric gas is higher than that at low altitude). As more carbon dioxide reaches the high altitude, more cooling processes occur, and the air fluidity becomes worse, so the atmosphere becomes thinner and the pull on the satellite becomes smaller, which leads to the acceleration of the satellite.

5. Change the animal gene map

As plants bloom early this year, animals that migrate according to the previous time may miss all the food. Animals that can adjust their internal biological clocks and adapt to changes early have a better chance to give birth to offspring with stronger viability, thus transmitting their own genetic information and ultimately changing the genetic map of the whole species.

6. The melting of frozen soil makes the surface uneven.

Global warming melts permafrost, causing the surface to shrink and become uneven, resulting in some pits, which have caused damage to railways, expressway and buildings. For high mountains, the melting of permafrost may even lead to mudslides.

7. The lake disappeared

In the past decades, 125 lakes have disappeared around the North Pole. Scientists have found that the disappearance of these lakes may be due to the melting of permafrost at the bottom of the lakes. Due to the melting of these permafrost zones, the lake water has penetrated into the soil.

8. Polar plants are alive

The melting of arctic ice has brought a bright future to arctic creatures. It is found that the concentration of chlorophyll in Arctic soil today is higher than that in ancient soil, which shows the biological prosperity in Arctic region in recent decades.

9. Animals migrate to higher ground.

From the19th century, chipmunks, mice and other animals began to migrate to high places. It is found that the reason why these animals migrate to higher places may be that their habitat environment has changed due to global warming. The change of habitat environment also threatens polar animals such as polar bears, because the ice they inhabit is slowly melting.

10. Allergy is getting worse.

Studies have shown that high carbon dioxide concentration and high temperature in the air are also one of the factors leading to allergies. Global warming makes plants bloom earlier than before, and the increase of carbon dioxide concentration will make plants produce more pollen and increase the pollen concentration in the air. Allergens come early, and the allergy season is postponed. Allergy will only get worse.

Other consequences caused by the earth's climate change, such as increased allergies, raging forest fires, and the disappearance of Arctic lakes, may be little known.

1 1. Impact on climate

As the temperature rises, it is expected that the incidence of floods, droughts, fires and heat waves will also increase in some areas.

The greenhouse effect has been working since the formation of the earth. If there is no greenhouse effect, the surface of the earth will be extremely cold, the temperature will drop to MINUS 20 degrees Celsius, the ocean will freeze and life will not form. Therefore, we are not faced with the problem of whether there is a greenhouse effect, but the problem that human beings emit a lot of greenhouse gases into the atmosphere by burning fossil fuels, which leads to the greenhouse effect and the rapid change of the earth's climate. Due to the burning of fossil fuels and the deforestation of a large number of forests, the concentration of carbon dioxide in the earth's atmosphere has increased. Due to the greenhouse effect of carbon dioxide and other gases, the global average ground temperature has increased by about 0.3-0.6 degrees Celsius in the past 100 years, and it is expected to increase by 1-3 degrees Celsius in 2030. When the global average temperature rises 1 celsius, great changes will occur: sea level rises, glaciers in mountainous areas retreat, and the snow area shrinks. As the global temperature rises, it will lead to unbalanced precipitation, with precipitation increasing in some areas and decreasing in some areas. For example, in the Sahel region of West Africa, severe drought began at 1965; Since 1965, the precipitation in North China has decreased year after year. Compared with 1950s, the precipitation in North China decreased by 1/3, and the water resources decreased by 1/2. The drought-stricken area in China is about 400 million mu every year. In normal years, irrigation areas in China lack 30 billion cubic meters of water every year, and cities lack 6 billion cubic meters of water. Due to the rising temperature, the global sea level has been rising at a rate of 1-2 mm per year in the past 100 years. It is predicted that the sea level will continue to rise by 30-50 cm by 2050, which will flood a large number of low-lying areas along the coast. In addition, due to climate change, climate disasters such as drought, flood and low temperature have intensified, resulting in global economic losses of more than tens of billions of dollars every year.

12. Glacier melting

1998 is the hottest year on record in the history of the eastern United States. This year, 2850 square kilometers of Antarctic ice sheet broke away from Wilkins and Larsen ice shelves. Other parts of the huge Antarctic ice sheet are also fully retreating.

Castaing Mountain is the only mountain in hot Asia with perennial snow on its top. However, in recent centuries, the glaciers in Casta have obviously shrunk, resulting in an increase of about 100 meters of snow line. In addition to polar ice sheets, Himalayan glaciers are the largest part of ice bodies in the world, with about1.5000 glaciers. The meltwater of these glaciers is the source of the Indus and Ganges rivers, the oldest rivers in the world. If the water sources of these two rivers are exhausted or gradually reduced to a trickle, the basic elements of agricultural society will be completely destroyed. In recent years, due to the emission of "greenhouse" gas and the generally recognized greenhouse effect, it has been observed that the alpine glaciers from Patagonia to Switzerland are melting. In South Asia, the question is not whether glaciers are melting, but how fast they are melting. Although many adverse effects of global warming may not become very serious before the end of 2 1 century, glacial meltwater in Nepal, India, Pakistan, China and Bhutan may soon bring people trouble. A research report of the International Snow and Ice Commission (ICSI) pointed out: "The glaciers in the Himalayas are retreating faster than anywhere else in the world. If the current melting rate continues, these glaciers are likely to disappear before 2035. " Said Ha Bosco Wong, head of the International Ice and Snow Committee, said: "Even if the meltwater of glaciers dries up within 60 to 100 years, the scope of this ecological disaster will be shocking."

Glaciers in the eastern Himalayas in the Ganges River basin have melted the most, and those distributed on the "roof of the world" from Bhutan to Kashmir have retreated the fastest. Take the 3-mile-long barna Glacier as an example. This glacier is one of many glaciers formed by the collision between the Indian subcontinent and the Asian continent 40-50 million years ago. Starting from 1990, it retreated half a mile. After the severe sub-arctic winter in 1997, scientists had predicted that this glacier would expand, but it retreated further in the summer of 1998.

13 agriculture

(1). Effect of temperature on crops:

In mid-latitude areas, the average temperature rises by 65438 0 degrees, and the evaporation increases by about 5%. These areas will be reduced 10%~30% due to drought.

(2). The impact of increasing carbon dioxide on crops:

Double carbon dioxide concentration can increase the photosynthetic rate of plants by 30%~ 100%. Among the 20 main food crops in the world, 16 crops are sensitive to carbon dioxide concentration. When the concentration of carbon dioxide is doubled, its output will increase 10%~50%.

(3) Changes in cultivated land area:

The area of cultivated land in middle latitude and high latitude will increase.

14. Industry

(1). The influence of rising temperature on domestic electricity consumption;

(2). The influence of rising temperature on industrial layout:

2. The solution is: 1. ) reduce greenhouse gas emissions, use more clean energy, plant trees, prevent forest fires, reduce consumption, reduce waste gas emissions, and use public transportation as much as possible. 2.) Adapt to climate change. Cultivate new crop varieties, adjust agricultural production structure and build coastal dams. 3) Possible ways for the government to testify: direct control, economic means and encouraging public participation. 4) Strive to strengthen international cooperation.

3. Conclusion: Advocate low carbon and protect the earth. Let's advocate low carbon and protect the earth! Let Mother Earth shine again! Let the earth change from green to green! (or) low-carbon life, starting from me. If everyone in the world can do it, it can reduce carbon emissions by one trillion kilograms every day! Faced with amazing figures, you should know what to do, right?