A fetus is especially at risk because they are under developed and easily susceptible to sicknesses or radiation
        
                    
             
        
        
        
Answer:
Eukaryotes: 
-Organisms with a well defined nucleus are known as eukaryotes. such cells are called as eukaryotic cells.
- Their nucleus is enclosed within the nuclear membrane.
- They do not posses a mitochondria.
- The cell wall is the outer most layer of a eukaryotic cell (only plant cells have a cell wall)
- The cells are divided by a process called mitosis.
Eg: Plants, Animals.
Prokaryotes:
- Organisms without a well defined nucleus are known as prokaryotes. Such cells are called as Prokaryotic cells.
- They lack nuclear membrane.
- Mitochondria, Golgi bodies, chloroplast and lysosomes are absent.
- The genetic material (DNA) is present on the chromosome.
Eg: Every organism coming under the kingdom monera.
Explanation:
 
        
             
        
        
        
Answer:
I think it's number 2 (viewpoint)..... 
 
        
             
        
        
        
D. a car is not made up of living cells
        
                    
             
        
        
        
 In some reactions, a single-reactant substrate is broken down into multiple products.