Organisms may contain up to five levels of organization within body. 
Liver is an organ, which are made up of tissues.
Organs are the body's recognizable structures which performs specific tasks. 
The liver's main job is to filter the blood coming from the digestive tract, before passing it to the rest of the body
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The third one! 
Mitosis makes two identical daughter cells (so both are diploid).
Meiosis makes 4 haploid cells (each with half the chromosomes of the original cells)...these are how the gamete cells (sperm/egg) are made.
 
        
                    
             
        
        
        
The whale carcass will provide both solid food and liquid food for deep ocean creatures like a shark and monster squid will eat the solid food while other types like the small fish will only be able to consume the liquid food 
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After the temporary layer is released during the menstrual period the uterine lining is about 2mm thick. When estrogen levels increase the uterine lining regenerates 11mm thick by late in the follicular stage.
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