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Global warming is the name given to a phenomenon in which the average temperature ( 15  ° C (59  ° F) )  of our planet Earth is being increased in a gradual way. it is explained through the increase in the level of greenhouse gases in the atmosphere.  Carbon dioxide, methane, ammonia(ions), nitrous oxide⁠ , etc. are known as greenhouse gases as they trap rays (solar radiation reflected by the surface of the earth, these waves are long waves) reflected by the surface of the earth and these gases are also responsible for keeping the earth a little warmer for maintaining the life-supporting system. but due to industrialization and development ( use of non-renewable sources of energy like coal, and petroleum) concentration of these gases is increasing in the atmosphere, due to this increased concentration of greenhouse gases more heat is trapped by the atmosphere, and the atmosphere is becoming warmer.  https://www.youtube.com/watch?v=kmF9CQh3URg

 The flow chart is used to explain any event or process or the life of any personality. Lines, shapes, and symbols can be used to make a flow chart.  but flow charts, mind maps, and concept maps are very creative tools and their structure may differ from person to person. their type may be countless and they also differ from subject to subject.