In the United States ecological footprint of each person is about 10 hectares.The Earth presently has 11.4 billion hectares of productive land and water.If everyone in the world lived at the same level of consumption as the average American about how many earths would we need to survive according to the ecological footprint analysis?

Question

Quizplus · Accepted Answer

The total productive land and water available is 11.4 billion hectares. If each person requires 10 hectares and the global population is approximately 7.8 billion, the total required would be 78 billion hectares. Dividing 78 billion by 11.4 billion gives approximately 6.84, indicating nearly 7 Earths would be needed, but the closest choice is 5 Earths.

In the United States Ecological Footprint of Each Person Is