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Pls give short notes on greenhouse effect(advantages&disadvantages),global warming,acid rain..?

Green house effect   : Greenhouse effect is concerned with the infrared radiation given off by the earth .Part of the radiation is absorbed by the atmosphere .The gases in the atmosphere that absorb infrared  light are H₂O , CO₂ ,O₃ ,NO₂and CH₄.These gases act as as insulating blanket for the earth .Also they would act to lessen heat loss from a green house. So it is called green house gas effect .Sun radiates solar energy on earth .The larger part of this energy is radiated back into space. Green house gases in the atmosphere contributes to global warming by adsorption .Green house effect provide earth warm enough for human to live and grow food .Green house effect opppositely affect climate also results rising temperatures ,rising sea levels and change weather patterns . 

Global warming     :    Global warming is the rise in average temperature of earth's atmosphere Warming of the climate system is unequivocal and it is mostly caused by increasing concentration of green house gases produced by human activity such as burning of fossil fuels,deforestration etc .

 Advantages of global warming :

(i) In frozen regions on earth's such as Arctic ,Antartic ,Siberia and other frozen regions experience more plant growth and milder climate

(ii) It also causes less needs for energy consumption to warm cold places

(iii) It also causes less needs for energy consumption to warm cold places

(iv) It oppositely affect on world climate and also cause  food shortage .

(v) Because of this , deserts gets dried leaving  to increased desertification.

(vi) Global warming also cause disease in human and animal cells ,loss of habitats ,increased air pollution etc .