Life Over Time

1. This type of "selection" allows breeders to produce new varieties of an animal over time.
4. Darwin left England on __________ ____, 1836. He returned 5 years later.
5. Cretaceous Extinction shows fossils around ____ _________ years ago, animals called Dinosaurs lived all over the planet.
6. Evolution refers to the process through which _________ change over time.
10. Through this, members of a species that are best suited to their environment survive and reproduce at a higher rate than other members of the species.
11. These living things are made up of many cells.
15. Finding the __________ of Fossils.
16. Darwin traveled to this location to learn more about Speciation.
17. The evolution of new species from an existing species.

2. He published what would become the basis of the modern theory of evolution.
3. He was the first scientist to propose a model of how life evolves.
7. _________ Extinction is where about 250 million years ago, approximately 90% of the species living in the ocean became extinct.
8. These organisms are made up of a single cell.
9. Fossils do not provide a glimpse of a very long story: True or False.
12. Adaptation is any inherited trait that gives an organism an ______________ in its particular environment.
13. During Earth's history, there have been several periods when huge numbers of species have died or become extinct in a very short time. What is this event called?
14. The remains of organisms preserved in the Earth.