Three different types of inks are used in this experiment. The ink are black, red and green in colour. During the course of the experiment, the black ink changes colour from light blue to dark blue and then to red. The red ink changes color from red to pink. The green ink changes colour from dark blue to green and then to yellow. 
 
        
             
        
        
        
The alteration in the protein structures can take place due to many reason. Once, the structure of the protein is altered, it cannot perform its function, as it cannot bind to the site for which it is designated. 
Most of the biological processes use proteins in their completion. In case, the protein cannot perform its function, the metabolic process associated with that particular protein may stop and cause severe illness. 
The heat can cause the denaturation of the proteins. The proteins are made up of amino acid sequences, the heat can break the peptide bond present between the amino acids present in protein, which can result in alteration of protein. 
Hence, the correct answer is option (d). all of them are correct.
 
        
                    
             
        
        
        
Sugar, water, and other food molecules.
 
        
             
        
        
        
<u>Answer:</u>      Erosion
<em>The process in which there is a wearing down on the surface on the earth which goes through the erosion is called gradation.</em>
<u>Explanation:</u>
There is a certain force which is the cause for the <em>formation of earth’s surface and that force is called as endogenic forces. </em>
There may come up a question about how the <em>surface of the earth</em> is not even, the reason is due to exogenic process failing to even out <em>the variation of the land.</em>