i would imagine a few million, Earth is a huge place.
Currently, the moon does not have the necessary resources to support a large population. Technological advancements would be needed to establish sustainable colonies for a small number of people, not a large population.
todays population not to many
There are many things we can do to live in a sustainable way. * Start an organic garden * Use CFL light bulbs * Bring your own mug to coffee houses The links in the "link" section give lists of easy things we can do to be more sustainable.
Population is bad when it is too large to be sustainable with available resources, or if it is distributed in a way that too many resources have to be brought from too far away in order to have an efficient and sustainable system of supply.
Many, many people have written essays on population
1
it needed at least 2
A minimum of 2 people are needed to play poker.
There is at least 5,000 children, to live a sustainable population
studies of population is how many people are in an area
Population of Nigeria Nigeria has a population of 151,319,500 people.
how many people in Mexico