<span>The answer to 10 is A as liquids expand with an increase in temperature. 12. Not able to answer. The answer to 17 is A as a the two different metals expand and contract at different rates when heated and cooled.</span>
        
                    
             
        
        
        
the answer is hemimetabolism
 
        
             
        
        
        
The nervous system and the muscle system respond to stimuli to produce motion. The skeletal movements of muscles are mostly voluntary. 
Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the spinal cord. 
<h3>What are Skeletal muscles?</h3>
Skeletal muscles may be defined as the muscles that fasten to your bones and authorize you to achieve a broad range of activities and operations. 
Skeletal muscles control the direct movement of a person's will and are hence referred to as voluntary movement. While the spinal cord is associated with both movements directly or indirectly. It is a prolonged, delicate tubelike network liable for holding incoming and outgoing messages through the brain to the rest body. 
Therefore, it is well described above. 
To learn more about Involuntary movements, refer to the link:
brainly.com/question/1462286
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<span><span>A plant that, when self-fertilized, only produces offspring with the same traits.</span></span>
        
             
        
        
        
Fire is not a living thing, and abiotic factors are the factors in an ecosystem that are non-living. So, fire is an abiotic factor in an ecosystem, though its not mentioned alot.