8+Catastrophism,+Uniformitarianism,+and+Gradualism

= Catastrophism, uniformitarianism, and gradualism all relate to each other and evolution. =

Definitions:
**Catastrophism:** Natural disasters such as floods and volcanic eruptiong shape landforms and cause species to either adapt or go extinct. ^ This picture shows a volcano after an eruption. You can see that the whole environment around it has change and there is no doubt that the species in the area will change.

**Gradualism**: Slow changes effect landforms and land shapes forcing a species to slowly adapt. ^ The slow adaptation of a species.

**Uniformitarianism**: geological processes are the same throughout time. The same geological process are happening now that had happened millions of years ago. ^ This shows two geological processes as a cycle. They are shown as a cycle because they occur the same way throughout time, slowly changing the environment.

=Relation to evolution:= Gradualism, catastrophism, and uniformitarianism are all related to geological processes and how they effect evolution. The changes that are made by each process are enough to change how the species adapt and change. Time plays a key role in all three of the ideas, whether it be how they work through time or what exactly they do in that time. Through history, scientists have found multiple pieces of evidence to support these ideas. They look at the rock layers to see the repetition and change in environment and fossils to see the change in species over time. Therefore, at this time there are not any other explanations for these phenomena.