None of them.
I'm assuming that you left off an option. a prokaryotic cell is a single-celled organism, generally a bacteria. an example would be e-coli. 
        
                    
             
        
        
        
Answer:
sharks are not cold blood killers because they don't kill for fun they kill because they are confused because when they see a human in the water swimming or splashing  so they might try to investigate but sharks have more to fear to us than we do to them
::) hope this helps
 
        
             
        
        
        
Answer:
Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.
Explanation:
 
        
             
        
        
        
The haploid male (sperm) and female (egg<span>) sex </span>cells<span>; in </span>plants<span>, formed by mitosis of haploid </span>cells<span> in the gametophyte. ... The multicellular diploid portion of the </span>plant life cycle<span> resulting from the growth, mitosis, and </span>cell<span> division of a zygote. </span>Produces<span>sporangium that store haploid spores. Google*</span>
        
                    
             
        
        
        
Birds and animals and maybe the bony fish.