Polysaccharides like Cellulose form insoluble micro-fibrils making it resistant to degradation and enzymatic activity.
<u>EXPLANATION: </u>
- Polysaccharides components in general broken down monosaccharides and they are very little enough to be absorbed by the body. 
 - But the polysaccharide like cellulose cannot be absorbed by our body. 
 - Cellulose is made up of simple polymers that form insoluble micro-fibrils results in resistant to degradation and enzymatic activity. 
 - Also, molecules of each micro-fibril are so tightly packed structure and prevent the penetration of enzymes. 
 - Thus, cellulose degradation requires a complex enzyme and cellulose.
 
 
        
             
        
        
        
I think dna replication are inportant because of the cells in the dna
        
             
        
        
        
Answer:
Carbon sources
Carbon sequestration 
Explanation:
Carbon sources are regions that produces atmospheric carbon dioxide. This carbon dioxide is naturally added to the atmosphere when organisms respire, decompose, rocks with carbonate are weathered and volcanoes erupt.
Carbon sequestration is the process of taken and storing atmospheric carbon dioxide. The method helps in reducing the amount of carbon dioxide in the atmosphere which in turn reduces global climate change.
 
        
             
        
        
        
The stage at which the development of the brain reaches its adult is the middle childhood. A child's Brain undergoes a period of development from birth to three-producing more than a million neural connections each second. This development is influenced by many factors, which include the child's relationships, experiences and environment.
        
             
        
        
        
B. Stems absorbed water and minerals from soil
Hope this helps! :)