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global change

global change

بواسطة - علاء سرحان
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Global change


refers to changes in the Earth system. The system consists of the land, oceans, atmosphere, Polar Regions, life, the planet's natural cycles and deep Earth processes. These constituent parts influence one another. The Earth system now includes human society, so global change also refers to large-scale changes in society and the subsequent effects on the environment. 

 

   As we all know, the earth has gone through warm and cool phases in the past, and long before humans were around. Forces that contribute to climate change include the sun's intensity, volcanic eruptions, and changes in naturally occurring greenhouse gas concentrations. We can observe this happening in real time in many places. Ice is melting in both polar ice caps and mountain glaciers. Lakes around the world, including Lake Superior, are warming rapidly — in some cases faster than the surrounding environment. Animals are changing migration patterns and plants are changing the dates of activity," such as trees budding their leaves earlier in the spring and dropping them later in the fall. One of the most immediate and obvious effects of global warming is the increase in temperatures around the world. The average global temperature has increased by about 1.4 degrees Fahrenheit (0.8 degrees Celsius) over the past 100 years, according to the National Oceanic and Atmospheric Administration (NOAA).

  

We can reduce the impact of global change by: Increase energy efficiency and use of renewable energy, planting trees, reducing the use of fossil fuels, Building low-carbon resilient cities, Factory chimney filtration, Recycle waste properly and convert it into useful products and electrical energy and more and more ways.

But nowadays the fire is spreading fast around, more than 300 fire in woods very day, so the global change will continue.