Question

How has human population growth change over time

Answer 1

The figure “Future of World Population Growth” illustrates three scenarios for population change, depending on levels of fertility. World population is projected to increase to 8 billion by 2025 and to reach 9.2 billion by 2050 according to the medium scenario where fertility reaches 2.0 children per women.

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Answer 2

Human population growth has gotten larger and larger as time goes on. The first 1 billion people were in 1803. It has taken 120 years to get to another billion people. It is changing by 80 million people born a year. At 10 billion, we will most likely fall short of food supply due to the overpopulation.