For most of Human history ,up to around 10 thousand years ago .Human population on the Earth remind at 10 millions to 11 millions .Since it's population has grown to 6.2 billions in the present time .The problem that Human going to face caused by Overpopulation has being huger.Pollution ....we can not avoid them anymore.
In the History ,Huge human population increase rashly most of them occurs in the recent few decades .Human population in the 60 years period from 1900-1960 .It double (roughly)in the 40 years period from 1960 to 2000,it increase by 3041 millions .Then you can see Earth is changing right now .
The main reasons that we tries to control Earth's human population growing because lot amount of Human population could makes Earthworse and worse :More crow ,more pollution .......they build house and deforestation.They keeps using lot number of land ,gas tree and much more resourses.Some of them will extincted within 50 years .''What should we do if there are no more resource for we to use.Most of these problems occurs in China and India in pats few decades .China has planed to controlled birth rate but over pollution also going to harm these two countries .Shortage of water ,Acid Rain and over mining are putting both countries in huge dangerous situation .
Right now ,Some of countries have to managed to increased their carrying capacity by using technologies such as modern agriculture ,Desalination and nuclear.Some of people thinks that more populating can lead to more technological innovation that lead improve our living standard but most of them see ''Overpopulation as a problem.
As you can see overpopulation is big problems human ever face .Wake up!!!!!!Human!!!!!!Start-es to cherish your environment .please leaders in those countries started to controlled population ,otherwise,the Earth will no longer beautiful.