1. Adaptations

2. Adaptation
A trait that helps an organism survive

3. Charles Darwin
Explored the world in the 1800’s, observing different organisms
Developed the idea of natural selection, best adapted animals will survive

4. Galapagos Organisms Finches-different beaks
Iguanas-large claws to eat seaweed
Animals and plants different from mainland relatives after many generations

5. Evolution Gradual change in a species over time
Scientific theory- well-tested idea that explains observations

6. Causes of Natural Selection
Overproduction- even though insects lay million of eggs, why haven’t they taken over?
Variations-differences based on genes
Competition- food and resources are limited

7. Causes of Natural Selection
Selection- pass on best genes, like strongest animal or best camouflaged
Environmental Change- moth, monkey flowers in copper soil, warming environment
Genes- mutations can cause changes

8. Birds’ Bones Birds have hollow bones so they can fly easier.
Their bones are less dense than ours.

9. Fish Fins
Fish have fins to help them move in their watery environment