Answer:
The elodea Cells do not burst because they have cell walls that keep them rigid.
Explanation:
 
        
             
        
        
        
Answer:
They serve us as shelters. 
It protects us from many natural hazards like, rain,heat etc. 
It provides a privacy to every person. 
 
        
                    
             
        
        
        
Answer:
Explanation:
These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.
 
        
             
        
        
        
During aerobic respiration, complete oxidation of carbohydrates takes place. Glucose is broken down by oxygen to release energy, while carbon dioxide and water are the by-products of the reaction. The released energy is used to make a special energy molecule called Adenosine triphosphate (ATP).
        
             
        
        
        
There are many factors that might affect the failure of Patient 2's transplant operation. It could be 'transplant rejection'.
The process when a transplant recipient's immune system attacked the transplanted organ or tissue is called transplant rejection. This is the common cause why some transplant operation fails. Our immune system protects our body from harmful substances that might be present in the transplanted organ.