Biology B3 Part 8

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  • Created by: Sam
  • Created on: 26-04-12 15:53

Based on the Edexcel textbook

pg 70-71 Family society

10 000 years ago there was only about 12 million people in the world; now there are over 7 billion. All these people need food and clothing then many want manufactured goods such as cars on top of that. The demand for raw materials is going up.

The impact of humans on the environment increased when we went from being nomadic hunter gathers to farmers based in permanent communities. Now we live in cities, transform the landscape to suit our needs and have the nuclear technology to wipe out life on earth.

Once we began to farm there was enough food in one area to stop the need for a nomadic way of life. One farmer could also grow food for a number of people which gave other people free time to specialise in other things.

Today in MEDC's the majority of people live in cities with a small number of farmers growing the food. More people can afford technology and have high standards of living. We can travel the world and stay in touch with people over the internet.

pg 72-73 Humans and other apes

Humans are a species of great ape and our 'cousins' in the sense we had a common ancestor 6-6.5 million years ago are: chimpanzees, gorillas and orangutans. This is show through DNA. Humans and Chimps have about 99% of our genetic material in common.

Jane Goodall studied wild Chimps in Tanzania from the 1960's. At the time little was know about their behaviour and daily life. To begin with they ran away at her presence but they soon got used to her and she studied them at close quarters. She was first to witness them use twigs as tools and to see them cooperate to hunt monkeys. She helped to show how similiar monkeys are…

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