<span>..has evaporated from all the water sources around the world (streams, rivers, ponds, seas, oceans etc).
It is am established fact that the quantity of water present on the Earth has remained constant from the beginning of time. At any given point in time it may exist in one of its three forms i.e.ice, water or water vapor but there is no variation in its total quantity (hydrological cycle).</span>
        
             
        
        
        
<h2>a) is the correct option </h2>
Explanation:
The extracellular domain of the transmembrane receptor protein acts as binding site for primary messenger molecule whereas the transmembrane domain holds the receptor within membrane and the cytosolic domain has intrinsic tyrosine kinase activity, all these helps in proper cell signaling 
If because of any mutation there is change in shape of the extracellular domain then that molecule that normally binds to the receptor protein will no longer attach hence cellular response will be deactivated 
 
        
        
        
Gan đóng vai trò trung tâm trong mọi quá trình trao đổi chất trong cơ thể. Trong quá trình chuyển hóa chất béo, các tế bào gan phân hủy chất béo và tạo ra năng lượng. Chúng cũng sản xuất khoảng 800 đến 1.000 ml mật mỗi ngày.
 
        
             
        
        
        
The answer
is it will allow the water to expand and break the cell wall.  Lysozyme, one of the most powerful natural
antibacterial and antiviral compounds known to man, has been used in foods and
pharmaceuticals for over three decades as it naturally inhibits the growth.
 
        
                    
             
        
        
        
Transcription allows the DNA to stays within the nucleus during the process of expressing genes as proteins. Please mark as the brainliest answer if it helped.