Sure how many Which of the following is the best reasoning to explain why no one knows
people the Earth can support?
We do not know how much space is left on Earth, so we cannot predict how many people the Earth can
Support
DAll people do not use resources at the same rate and if those rates change, the number of people the Earth
Can support also changed.
We do not know which variables affects how many people the Earth can support.
All people use resources at the same rate but we do not know how many people will live on Earth in the