- "An animal is a kind of organism " is not a useful statement here

- Earthquakes causes older rock to be on top of younger rock
- Earthquakes cause rock layers to fold on top of each other
- So, earthquakes causes older rock layers to be on top of younger rock layers by folding the rock layers

Therefore, earthquakes causes older rock layers to be on top of younger rock layers by folding the rock layers
Question
In studying layers of rock sediment, a geologist found an area where older rock was layered on top of younger rock. Which best explains how this occurred?

Context
- An animal is a kind of organism 
- Earthquakes causes older rock to be on top of younger rock 
- Earthquakes cause rock layers to fold on top of each other