1. Unit 1 Darwin’s big ideas and ways of working Darwin’s big ideas and ways of working: Unit 1

2. High ratio of increase and Struggle for life Darwin’s weed patch experiment Darwin’s big ideas and ways of working: Unit 1

3. High ratio of increase and Struggle for life Darwin’s big ideas and ways of working: Unit 1 http://www.arkive.org/common-frog/rana-temporaria/image-A8918.html http://www.arkive.org/robin/erithacus-rubecula/image-A9289.html Eggs or very young animals seem generally to suffer most because they are competing with established organisms

4. Inheritance and variability Darwin’s big ideas and ways of working: Unit 1 Pollination - bees transfer pollen and pollen carries the potential for variability in plants

5. Darwin grew 54 varieties of the Cabbage family in his kitchen garden Inheritance and variability Darwin’s big ideas and ways of working: Unit 1

6. Making Connections Bumble bee Field Mouse Cats What is the connection between these organisms? Red clover Darwin’s big ideas and ways of working: Unit 1

7. Darwin made collections and noticed the variability amongst the individuals he collected Inheritance and variability Darwin’s big ideas and ways of working: Unit 1

8. Life Cycles Seed to seed Some don’t survive even in a pod Darwin’s big ideas and ways of working: Unit 1

9. Divergence of Character List 5 ways in which dogs show divergence of character. Darwin’s big ideas and ways of working: Unit 1

10. Creating Models Darwin’s big ideas and ways of working: Unit 1

11. Extinction of less-improved forms ‘the same genera and species [of fossil plants] are found in the most remote regions where the plants now in existence are entirely different.’ (Darwin’s notebook on the transmutation of species) Endangered species appear on the Red List e.g. Wild horse http://www.arkive.org/przewalskis-horse/equus-ferus- przewalskii/description.html Darwin’s big ideas and ways of working: Unit 1

12. Extinction of wildlife occurs today because of: Habitat degradation – clearing for housing/roads/mining Human activities including hunting Competition with domestic livestock/crops Global warming Flooding Pollution – air, water, soil Darwin’s big ideas and ways of working: Unit 1