What do the deepest point in the ocean, the Mariana trench, and the highest mountain peak in the world, Mt. Everest, have in common?
![From Pollution to Solution](https://cdn.unenvironment.org/s3fs-public/styles/topics_content_promo/public/2022-06/promo.jpeg?itok=XlL17vv2)
What do the deepest point in the ocean, the Mariana trench, and the highest mountain peak in the world, Mt. Everest, have in common?