1. Charles Darwin and Natural Selection
“Origin of Species”

2. Darwin’s Ideas Influenced by:
Voyage on the Beagle ( )
Observations: Plants & animals well suited to their environments
Impressed by many ways organisms survived & produced offspring

3. Fossils

4. Why had so many species disappeared?
How are they related to living organisms?

5. Geologists James Hutton and Charles Lyell
Processes that form rock, mountains, and valleys are very slow
Earth is much more than a few thousand years old
Lyell
Geological processes we observe now have occurred for millions of years
Explains why marine fossils are at tops of mountains

6. Jean-Baptiste Lamarck
By selective use or disuse, organisms acquired or lost certain traits during their lifetime
These traits were passed on to their offspring
Over time, this process led to change in species

7. Thomas Malthus, Economist
Babies born faster than people dying
If population growth continued, people would run out of food, water and space
War, famine and disease prevents this

8. Artificial Selection
Breeders select best traits to produce next generation