Answer: homo sapiens is the only species with a large enough oral cavity and a low enough larynx to allow for speech production. 
<span>One line of evidence that speech only possible for modern homo sapiens is the anatomy of their throat. Speech depends on certain anatomical arrangements and the Homo sapiens is the only species with a large enough oral cavity and a low enough larynx that would allow speech.</span>
 
        
             
        
        
        
I think it is A
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The correct answer is reuptake.  
The reabsorption of a neurotransmitter by a neurotransmitter transporter situated along the plasma membrane of an axon terminal or glial cell after it has done its activity of conducting a neural impulse is called reuptake.  
The process of reuptake is essential for usual synaptic physiology as it permits for the recycling of neurotransmitters and monitors the neurotransmitter level in the synapse, thus, monitoring the duration of the signal resulting due to the discharge of the neurotransmitter.  
 
        
             
        
        
        
The periodic table only accounts for elements.  It does not account for compounds, such as water.
 
        
                    
             
        
        
        
~Hello there!
Your question: As an infant, the ability to produce antibodies is ________.
Your answer: As an infant, the ability to produce antibodies is limited.
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