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10.1 Early Ideas About Evolution Number your notebooks as far as you can in 5 mins • Remember: Odd #s always on right side • Write your name/period/McCobb/ C-1 on the front of your book • On Pg. 1 Write your: – Edmodo code and pw – OARs code and pw Set Cornell NotesAbout on pg. Evolution 10.1upEarly Ideas 3 Early Ideas About Evolution 2.110.1 Atoms, Ions, and Molecules •Topic: 10.1 Early Ideas About Evolution •Essential Question: 1. Why are the ideas that the Earth undergoes change and is billions of years old important for evolutionary theory? 1. Why are the ideas that the Earth undergoes change and is billions of years old important for evolutionary theory? 10.1 Early Ideas About Evolution Points to Ponder • Have you ever heard the expression of “survival of the fittest”? –What does it suggest to you? 10.1 Early Ideas About Evolution KEY CONCEPT There were theories of biological and geologic change before Darwin. 10.1 Early Ideas About Evolution EVOLUTION • Evolution-is a process of biological change by which descendants come to differ from their ancestors 10.1 Early Ideas About Evolution 10.1 Early Ideas About Evolution • A species is a group of organisms so similar to one another that they can reproduce (have babies) and have fertile offspring (babies who can have babies). 10.1 Early Ideas About Evolution Early Ideas about Evolution (pg. 3) Carolus Linnaeus • . • . • . Georges Louis Leclerc de Buffon • . • . • . Erasmus Darwin Jean-Baptiste Lamarck • . • . • . • . • . • . 10.1 Early Ideas About Evolution Carolus Linnaeus • Swedish botanist • Opened a classification system for all types of organisms – He grouped them by their similarities – System reflects evolutionary relationships 10.1 Early Ideas About Evolution Please classify these animals into groups based on their similarities. 10.1 Early Ideas About Evolution • • • • • • • Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Primates Family: Hominidae Genus: Homo Species: Homo Sapiens • • • • • • • Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Felidae Genus: Felus Species: Felus Catus • • • • • • • Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Canidae Genus: Canis Species: Canis Lupus 10.1 Early Ideas About Evolution Georges Louis Leclerc de Buffon • He proposed that species shared ancestors instead of arising separately • Rejected the idea that Earth was 6000 years old. He suggested that it was much older 10.1 Early Ideas About Evolution Erasmus Darwin • Grandfather of Charles Darwin • Proposed that all living things descended from a common ancestor and that more-complex forms of life arose from less complex forms of life 10.1 Early Ideas About Evolution Jean-Baptiste Lamarck • Proposed that all organisms evolved toward perfection and complexity • He did not think that species became extinct- He thought they evolved into different forms • Environmental change leads to use or disuse of a structure 10.1 Early Ideas About Evolution Theories of Geologic Change (pg. 2) (p.299 in book) Georges Cuvier Catastrophism • . • . • . PICTURE James Hutton Gradualism • . • . • . PICTURE Charles Lyell Uniformitarianism • . • . • . PICTURE 10.1 Early Ideas About Evolution There were three theories of geologic change. 1) Catastrophism- natural disasters have happened often during Earth’s long history • These events shaped landforms and caused species to go extinct Georges Cuvier 10.1 Early Ideas About Evolution 2) Gradualism-slow changes over a long period of time The Colorado River carving the Grand Canyon James Hutton 10.1 Early Ideas About Evolution –3) Uniformitarianism-Changes are uniform through time and occur at a constant rate Charles Lyell 10.1 Early Ideas About Evolution 10.1 Early Ideas About Evolution • Uniformitarianism is the prevailing theory of geologic change.