Answer:
➢ In a mercury thermometer, <u>a glass tube is filled with mercury</u> and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

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<h3>
Answer:</h3><h3>Hydrocarbons are the organic compounds that only contain hydrogen and oxygen element.</h3>
 
        
        
        
Answer:
hydrogen bond 
Explanation:
by weak electrical attraction between two polar molecule hydrogen bond is developed between them 
the example is water molecule in case of water two water molecules are attracted toward each other by strong hydrogen bond which is developed between highly electronegative oxygen of one water and electropositive hydrogen of another water molecule
 
        
             
        
        
        
The answer is that they treat bacterial infections.
        
                    
             
        
        
        
Answer:
B
Explanation:
Crossing over is the process involved during meiosis of two chromosomes sharing genetic information with each other from each parent. This happens so the two daughter cells or sister chromatids have a variety of genetic information and so they are not completely identical. This leads to genetic diversity or variation.