Answer:
 1.Vascular tube is used for vascular surgery and is very small in size with very small diameter and thickness,thus a little change in environment can also affect there result.
2.When testing for tension in the polymer it is very important to consider the strain rate as the increase in strain  can cause the material to  break.Therefore not only tension test but also strain test is required.
Explanation:
 
        
             
        
        
        
Given what we know,  we can confirm that the area of biology that states that living things undergo gradual, structural, and functional changes over long periods of time is referred to as evolution.
<h3>What we know about evolution. </h3>
- This is a theory that was put forward by Charles Darwin. 
- Evolution accounts for the structural and functional changes that are passed down from one generation to the next. 
- The changes produced by evolution are very slow in that they may take many generations to complete a noticeably change. 
- These changes are hereditary.
Therefore, we can confirm that the theory of evolution put forward by Charles Darwin states that living things undergo gradual, structural, and functional changes over long periods of time.
To learn more about the theory of evolution visit:
brainly.com/question/2491140?referrer=searchResults
 
        
             
        
        
        
The products are NADPH and ATP.
        
                    
             
        
        
        
Interphase is the cell grows and makes a copy of its DNA's and in m phase the cell separates the DNA's and divide its cytoplasm, forming two new cells