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| Description: Populations continue to rise in most countries Particularly in developing nations Although the rate of growth is slowing, we are still increasing in absolute numbers How much is 7.3 billion? It would take 30 years, counting once each second, to reach 1 billion It took all of human history- after 1880 - to reach 1 billion In 1960 we reached 3 billion, and added the next billion in 14 years (1974) The most recent billion took only 12 years Picture Stats: Views: 300 Filesize: 37.28kB Height: 505 Width: 632 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35696 |