All life depends on capturing energy from the sun and converting it in to a form that living organisms  can use.
- Two key processes (mirror each other)
- Photosynthesis (Sun -> Plants)
<span>- Cellular respiration (Plants/Animals/energy)</span>
        
             
        
        
        
A series of logical steps followed to solve problems.
        
             
        
        
        
Enzyme speed up the reaction and provide alternative reaction pathway,they accelerate the reaction and convert reactants into products
        
             
        
        
        
The immune system. 
The immune system acts as a defense system of the body. It fights against bacteria, viruses and any other disease causing pathogens. Some chemicals can weaken the immune system and make them vulnerable.