Answer:
A hydrogen atom is an atom of the chemical element hydrogen.Carbon is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.
In chemistry, an element is a pure substance consisting only of atoms that all have the same numbers of protons in their atomic nuclei.
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Answer:
It is a good concept but can't be used.
Explanation:
Producing artificial blood is a good concept but it can't take the place of real human blood because the artificial blood has many disadvantages which can cause great damage to our body such as binds nitric acid that affected blood flow, increases the level of bilirubin, amylase and lipase in the blood and also cause overload of iron in your organs or tissues so that's why it can't be used instead of original human blood but may be in the future if these complications are removed.
 
        
             
        
        
        
To feed nutrianse to the baby. whe the mother eats that goes to the umbilical cord and gives it nutriance
 
        
                    
             
        
        
        
The natural succession of a small farm pond will tend to make the pond more likely to freeze solid in winter time,the nature of things helps them to merge more quickly and adapt to their environment. 
        
             
        
        
        
Answer: it is False 
Explanation: because nutrients are not used to break down oxygen and water 
But these can be broken down in processes such as PHOTOSYNTHESIS ND CELLULAR RESPIRATION.
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