Question

21) If every person on Earth today lived with the average lifestyle of people in the United States, the land of ____ Earths would be required.

A) 2
B) 3
C) 4
D) 8
E) 10

Answer 1

If every person on Earth today lived with the average lifestyle of people in the United States, the land of 4 Earths would be required.

Step-by-step explanation:

If every person on Earth today lived with the average lifestyle of people in the United States, the land of 4 Earths would be required. This is because the United States has a high per-capita energy usage, approximately five times the global average. If the entire global population were to reach the same energy usage level, it would require five times the current scale. Additionally, the global population is projected to increase significantly by 2050, which would further increase the strain on the planet's resources.