Answer:
I think it's water vapor, but I don't know
Explanation:
water vapor
 
        
                    
             
        
        
        
Its Osteoporosis, also known as porous bones. Which is characterized by weak brittle bones and low bone mass. Both men and women are affected by this disease.
        
             
        
        
        
Answer:
The synthesis of energy using light.
Explanation:
Plants and photosynthetic organisms use this method instead of eating food.
Chlorophyll needed for this reaction is also a green pigment. 
 
        
                    
             
        
        
        
Hey there,
Your answer is:
4
The world deserts are divided into 4 categories. 
- Ari -