We could do thing with our hands without having to use some of our energy in getting up to try to balance on our two rear legs.
        
                    
             
        
        
        
Answer:
In trees, most savanna adaptations are to drought--long tap roots to reach the deep water table, thick bark for resistance to annual fires (thus palms are prominent in many areas), deciduousness to avoid moisture loss during the dry season, and use of the trunk as a water-storage organ (as in baobab).
 
        
             
        
        
        
Answer:
by using half to balance the equation
 
        
             
        
        
        
Answer:
The source of energy for chemosynthesis is energy liberated from a chemical reaction (the oxidation of an inorganic substance) 
Explanation:
https://sciencing.com/source-energy-chemosynthesis-6681808.html