How has human population growth change over time

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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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.

where’s the list ? the question is incomplete

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.