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100,000 BCE
Hunter Gatherers
- Hunter-gatherers kept grasslands for hunting by burning.
- Hunter-gatherers helped spread plants
- Hunter-gatherers may have led certain species to extinction
- Hunter-gatherers were more common in the non-modern era, but still sporadically exist today.
- Until 12,000 years ago, nearly all humans practiced hunter-gathering. (National Geo).
- Modern example of hunter-gatherers: Inuit
- Benefit: Balances ecosystem and food chain. (Lawrence Bay).
- Negative: Can mess up the food chain.
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10,000 BCE
Agricultural Revolution
- The practice of agriculture started in many different parts of the world 10,000 years ago.
- An area of land can support up to 500 times as many people by farming as it can by hunting and gathering
- The Agricultural Revolution was a transformative time when the world was transitioning from hunting to agriculture. (Science).
- Food was more accessible.
- Required an extensive amount of natural resources
- Released Co2 into the environment
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Industrial Revolution
- Occurred during the 18th century
- Fossil fuels were introduced
- Food could be grown quicker than before
- Shipping costs were lowered
- Harmful toxins such as Co2 and other greenhouse gasses were released into the environment
- Negative effect on natural resources
- Increase of harmful manmade entities.
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Present Day
- Fossil Fuels are still being used, but are being slowly phased out as the negative effects of the environment were proven
- Agriculture still occurs in many rural areas
- Industrialization is still common today.