User:Mahnoorsheikh9909

SUSTAINABILITY "The Last Hope"
According to recent research time 13,2019the world human population is estimated to be 7.712 billion, Now the worrying situation is that many scientists think Earth has maximum carrying capacity of 9 billion to 10billion people, just focus the word "MAXIMUM"

It is estimated that the world population reaching 8.6 billion in 2030, 9.8 billion in2060 and 11.2 billion by 2100 assuming in continuing decrease in average fertility rate from 2.5 birth per women in 2010-2015 to2.2 in 2015-2050 and 2.0 in 2095-2100

We a13,2019ll often know that over population is the single biggest threat to the Earth,

but what we can do?

Are there really too many people on Earth?

It is need to understand the fact that planet is not expanding there is only so much space on Earth

Number of peo13,2019ple on Earth is not issue but the number of consumers and the scale and nature of their consumption. says David Ratter Wharton, a senior fellow at theInternational Institute for Environmental and development in London.

He Quotes that "the world has en13,2019ough for everyone's freed"

The number of humans on Earth has been comparatively sma13,2019ll until very recently13,2019 just 10,000 years ago there might have been13,2019 no more than a few million people on the  Planet. The one billion mark was not passed until the earl13,2019y 1800 s, the two billion mark not until the 1920 s and what is the situation today?

Ever 7.712 billion people estimated in June 2019,

its an alarming situation !

Increase in birth, a decline in mortality rates, an increase in immi13,2019gration, an unsustainable biome and depletion of resources a13,2019ll are the results of over population.

But what ?? We don't care.....

Now the main question is that How much longer will earth last?

So answer is that plants usingPhotosynthesis may able to survive for at least 0.8 billion years and possibly as longer as 1.2 billion years from now, After which rising temp13,2019erature will make the biosphere unsustainable

And13,2019 what is the situation of C4 13,2019plant synthesis?

Present situation is that C4 plantsrepresents 5% of Earths's Plant biomass.

We all understand this alarming situation but we all are busy to fulfill 13,2019our greed,

which is quite impos13,2019sible!