World population was 2.5 billion in 1950.By 2050,world population is expected to reach about 10 billion; by 2150,it is projected to be about

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The United Nations projects that the world population will reach about 9.7 billion by 2050 and then stabilize or even start to decrease by the end of the century. The projection of 11.5 billion by 2150 aligns with the medium-variant projection, which assumes a gradual decline in fertility rates. Higher projections like 15 billion are considered less likely under current trends.

World Population Was 2