And reproductive isolation
        
             
        
        
        
Answer:
The correct answer is cholesterol is nonpolar.
Explanation:
Cholesterol is a complex lipid is synthesized from acetyl CoA.cholesterol is an important constituent of plasma membrane.
      Cholesterol is non polar in nature.As a result cholesterol is repelled by water and can be found between the layers of the phospholipid in the plasma membrane.
    As cholesterol is non polar it is also hydrophobic in nature.
 
        
             
        
        
        
Explanation:
Low power objective shows more field of view but does not give appreciable details about the view. 
- In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern. 
- The nucleus stands out appreciably and it is tiny. 
- The cytoplasm is also visible. 
- Root cells do not have chloroplast since they do not take part in photosynthesis.
Learn more: 
Onion cell brainly.com/question/2855039
#learnwithBrainly
 
        
             
        
        
        
Answer:
Generally, about half of the caught carbon is released in respiration. ... When it is dark, the only flow of CO2 comes from respiration.
Explanation: