Oxygen, neccessary for cellular respiration, is the answer. As oxygen becomes scarce, your cells begin to aerobically produce very little ATP, in effect fermenting and producing lactic acid.
        
                    
             
        
        
        
Extinction of species reduces the number of different species in ecosystems, hence lowering the diversity of living things.
        
             
        
        
        
1. A caelifera, or more commonly known as the grasshopper belongs in the animal kingdom. Grasshoppers are a leafy green and can be found in a variety of habitats. They can be found in lowland tropical forests or grasslands. Higher classification for the grasshopper would be Orthoptera. Grasshoppers are jumping insects that belong to the arthropod phylum.
Strong, long hind legs that help them jump. This adaptation helps them get away from harm and jump higher.
3. I said some in the first paragraph.
4. Important in grassland ecosystems and play a role in the nutrient cycling.
5. I don’t think there really is anything else.