Answer:
While this is mostly opinion, I would prefer option 2. With its lighter cyan colors and beautiful mountain scenery along with a serene beach tucked into a small cove, it is definitely the one I would use above any of the others.
Green house gases and pollution
The light comes in at an angle and turns upside down. Our eyes do the same thing but our brains are smart enough for it to turn the image again.
This layer of soil is called the A horizon.