I was trying to figure out the calculations for the exact number of humans the globe could sustain effectively. I came up with the amount of food that
humans need to consume everyday and the amount of fresh water that humans should drink. But a lot of my numbers are missing. I would venture to say
that this is not a authoritative list by any means but a guide.
The amount of food needed for one human per year is 3lbs per day multiplied by 365 days equals 1095 lbs of food per year.
The amount of water needed for one human per year is 2.8 Liters per day multiplied by 365 days equals 1022 Liters of water per year.
The amount of available land on Earth suitable for agriculture is >29.2%
The amount of fresh water available for human consumption is (unknown at this point in time)
A Holstein cow weighs between 1,100 and 1,500 pounds when milking. A
Jersey cow weighs 700 to 1,000 pounds. and produces X amount of food
The average Chicken Weighs X and produces X amount of food
The average Pig Weighs X and produces X amount of food
The average worldwide production of wheat is
The average worldwide production of corn is
The average worldwide production of rice is
The average time to slaughter for a cow is
The average time to slaughter for a pig is
The average time to slaughter for a chicken is
As you can see I am woe in need of a lot of data that I cannot find (probably cause im really lazy) but here it is what you would get in my estimation
if you calculated in every aspect of human development versus what this planet can produce you would come up with a number near the 500 million mark
as depicted on the
Georgia guide stones
[edit on 5/24/2008 by whatukno]