Is global warming bad for human beings?

Global warming is not all bad for mankind.

The impact of global warming on crop growth has both advantages and disadvantages. Global temperature changes directly affect the global water cycle, causing droughts or floods in some areas, resulting in reduced crop production. Too high temperature is not conducive to seed growth.

Increased precipitation, especially in arid areas, will actively promote crop growth. The increase of carbon dioxide content with global warming will also promote the photosynthesis of crops, thus increasing the yield. The increase of temperature is beneficial to increase the yield of crops that like damp heat in high latitudes.

If there is no greenhouse effect, the surface of the earth will be extremely cold, the temperature will drop to MINUS 20℃, the ocean will freeze and life will not form. When the global average temperature rises 1℃, great changes will take place: sea level rises, glaciers in mountainous areas shrink, 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.

Extended data

In geological history, the earth's climate has undergone major changes. The hottest weather in the history of hundreds of years has appeared in all countries in the world, and El Ni? o phenomenon has also occurred frequently, which has caused huge economic losses to all countries. Developing countries are weak in disaster resistance, and developed countries are not immune. 195 Chicago heat wave killed more than 500 people,193 a hurricane in the United States caused a loss of 40 billion dollars.

In the 1980s, the insurance industry's climate-related claims amounted to $654.38+0.4 billion, almost reaching $50 billion between 654.38+0.990 and 654.38+0.995. These conditions show that the adaptability of human beings to meteorological disasters caused by climate change, especially climate warming, is quite weak, and actions need to be taken to prevent it.

According to the development trend, scientists predict the possible impacts and hazards as follows:

1, sea level rise;

2, affecting agriculture and natural ecosystems;

3. Aggravate meteorological disasters such as floods and droughts;

4, affecting human health;

5. Climate change and its impact on China.

Baidu Encyclopedia-Environmental Impact

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