There are so many examples for that in different areas, like biology experiment carried out in our lab recently.
Here's one link : https://www.creative-biogene.com/Services/ion-channel-cell-line-development.html
 
        
             
        
        
        
There are less trees and plants to absorb CO2 (carbon dioxide) and convert it to oxygen.
        
             
        
        
        
3 examples are-
1.ice wedging - when water gets into cracks, freezes and expands
2.roots-while they grow, they push rocks aside that later break.
3.animals- when they dig underground, they push rocks aside causing them to break 
        
             
        
        
        
When you are sick your muscles shut down and you skeletal system helps keep you from turning into a blob.