Answer:
I think u forgot to mention the text.....
Explanation:
So what exactly is the question? I think you need to put a source so we know how to answer it.
The Grand Canyon is an example of physical weathering.
Another example is a landscape called karst formed by chemical weathering
I read this book last year so take this with a grain of salt.
Gene jumps from the tree to compete with Finny due to the fact that Gene is always trying to do better than Finny. He is put under the grasp of peer pressure due to Finny almost forcing him to do this. Ever since he first jumped Finny kept pressuring him to jump since he thought Gene enjoyed jumping.
Rather than uses this answer you should probably just reread chapters 3-4