Through <u>immense amounts of heat that come from the phase of mountain building</u>, it will cause the amount of heat and pressure that will cause the rocks to go through the <u>rock cycle</u> of bending, folding, crushing, flattening, and shearing to become a metamorphic rock. Metamorphic rocks through all the compact pressure and heat will <u>become way harder </u>than that of a sedimentary rock which will indicate that of a metamorphic rock. 
<em><u>Hope this helps!</u></em>
 
        
             
        
        
        
Answer:
Nervous System
Explanation:
"Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron."
 
        
             
        
        
        
The biggest difference in the microbiota can be seen in : ( B )  your cheek versus your friend’s cheek. 
<h3>What is Microbiota </h3>
Microbiota is the microorganisms present in specific region or area and It protects the region from harmful indigenous microorganisms as well. The microbiota specie that is present in an individual varies greatly from the microbiota species present in a different individual. 
Therefore the Microbiota species present in your cheek will vary greatly from the microbiota species present in your friend's cheek. 
Hence we can conclude that The biggest difference in the microbiota can be seen in  your cheek versus your friend’s cheek. 
Learn more about Microbiota : brainly.com/question/9870114
 
        
             
        
        
        
<span>A dichotomous key is very easy to use because it provides only two choices. </span>
        
             
        
        
        
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The correct answer is option C. wave particles and the transfer of energy.
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