Answer is a. neolithic where they use wild and domesticated crops and domesticated animals
        
             
        
        
        
Answer:
"plants release oxygen"
Explanation:
Photosynthesis is critical for the existence of the vast majority of life on earth...so we'll go with "plant release oxygen"
 
        
             
        
        
        
Roots have tint root hairs that maximize the plants ability to absorb water