9 Parts of the earth’s system we need to respect

There are certain boundaries we shouldn't cross to keep our world sustainable. Scientists dub it the Sustainability Doughnut. At our current state we already passed a couple of these boundaries. Some of which being Climate Change and Freshwater Use. Scientists believe that all 9 of these listed below are essential for human survival.

Ranking
1. Climate Change - The most popular controversy out there. Some believe that it's a problem and some don't. I think it should be fixed.
2. Freshwater use - People don't understand how much water we actually have in the world. How much drinkable fresh water we have.
3. Chemical Pollution - This is any kind of pollution from vehicles polluting the earth with carbon, to drowning the ocean in nitrogen.
4. Land System Change - We're using up too much land on agriculture.
5. Ocean acidification - The increase of carbon dioxide is making the oceans more acidic. 
6. Biogeochemical Loading - The 5 cycles, carbon, nitrogen, oxygen, phosphorus, and the water cycle needs to act in equilibrium.
7. Biodiversity laws - We need variety of life in our world. The world isn't made to survive the way humans are living right now.
8. Atmospheric Aerosol loading - Aerosols can affect cloud formation and patterns.
9. Ozone deletion - Ozone destroying chemicals were banned in 1987, preventing anyone from damaging the precious layer.