1. Genetic change in a population over the course of several generations.
Evolution
Genetic change in a population over the course of several generations.

2. Evidence Supporting Evolution
1. The fossil record of change in earlier species
2. The chemical and anatomical similarities of related life forms
3. The geographic distribution of related species
4. Similarities in Embryology

3. The Fossil Record
Remains of plants and animals found in sedimentary rock.
This give us a record of changes to species over time.
Each layer of strata contains fossils or organisms from the same relative time period.

4. Fossil Record
Some fossils are good examples intermediate forms or transitional species
They show the changes that take place in a species over a long period of time
They show derived traits

5. Chemical and Anatomical Evidence
DNA
Amino Acids
Body Structures inherited from a common ancestor
Homologous structures
Vestigial Structures

6. Geographic Distribution
Isolated areas have their own distinct plant and animal communities, adapting to different environmental pressures
Before humans, Australia had over 100 species of marsupials, but very few placental mammals.
Evidence that they evolved in isolation.

7. Similarities in Development
Early stages or embryos can be similar
Common cells and tissues grow in similar ways

8. Genetic Changes Natural populations have genetic diversity
Those who are better able to survive, leave more offspring
Their traits will be more common in the next generation

9. Antibiotic Resistance
This same phenomenon of bacteria evolution speeded up by human actions occurs in our own bodies at times when an antibiotic drug is unable to completely eliminate an infection.  Doctors do not want to allow any potentially antibiotic resistant bacteria to survive so insist that all of the antibiotic is taken even after you feel better.

10. Speeding Up Evolution
Organisms that reproduce quickly and in large numbers can show changes very quickly
Insects and crop damage require new pesticides

11. Common Ancestors
Anatomical similarities indicate that some species had a common ancestor
Wolves and dogs show similarities to foxes
For some, the common ancestor is more distant than for others