Question

in the past 10 - 15 years the amount of projected human population changed from ____ to ____?
7.5 billion to 8.0 billion
4.0 billion to 5.0 billion
4.0 trillion to 5.0 trillion
7.5 million to 8.0 million

Explanation:

The question is about projected human population change in the past 10 - 15 years. Human population is measured in billions. Trillions are too large for population counts and millions are too small.

Answer:

A. 7.5 Billion to 8.0 Billion