Answer:
Skin is the human body's largest organ.
 Explanation:
Body organs aren't all internal like the brain or the heart. There's one we wear on the outside. Skin is our largest organ—adults carry some 8 pounds (3.6 kilograms) and 22 square feet (2 square meters) of it.
 
        
                    
             
        
        
        
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
        
                    
             
        
        
        
Our interconnected neurons help us process different types of information. Synapses are the gaps between neurons. <span>When an impulse reaches the end of one axon, it is now an action potential. This electric signal cannot leap across this gap so as to speak. Special chemicals called neurotransmitters have this role to be possible. The best answer is thus neurotransmitters. </span>
        
             
        
        
        
<span> Very inefficient. Almost 90% of all energy is lost between trophic levels. That is why larger animals need to eat more, because less energy is being consumed. 
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<span>One plant is called angiosperms </span>