the three general classifications are sensory neurons, motor neurons and interneurons. I don't know how they work together to produce a response to an environmental stimulus:( sorry
        
             
        
        
        
Answer:
Asia - China (followed by India)
north America - USA (closely followed by canada)
european - Russia ( followed by Germany)
oceanic - Australia
 
        
             
        
        
        
Ans: A .carbon dioxide and water
Carbon dioxide + water → glucose + oxygen
        
             
        
        
        
Throwing garbage on the ground, not putting out a camp fire, lighting something that creates smoke...