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| Description: Paleolithic period (Old Stone Age): Use of fire as much as 1.5 million years ago Shape and use of stones 2.5 million years ago, which helped modify their environment Little evidence about world populations at this time Neolithic (New Stone Age): Agricultural Revolution 10,000 to 12,000 years ago Initiated a permanent change in the way humans relate to the natural environment Made cities, trades, science, armies, and other aspects of modern culture possible Industrial Revolution: Began in the mid – 1700s A shift from rural life, animal-powered agriculture, and manufacturing by craftsmen, to an urban society powered by fossil fuels Improvements in sanitation and medical technology Enhanced agricultural production Medical-Technological Revolution: Currently in the midst modern medical and technological advancements People live longer and healthier lives Green Revolution – shift to modern agricultural practices Burgeoning numbers of people are making heavy demands on Earth’s natural resources People are harvesting 12.5% of global NPP Land use reduces it by another 9.6% Heavily farmed regions such as India, eastern China, and Europe have highest proportional use Picture Stats: Views: 285 Filesize: 872.71kB Height: 886 Width: 1288 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35702 |