In the periodic tables metals are on the left side and nonmetals are in the right side.... so we can know whether an element is metal or nonmetal by it's position on the periodic table..
        
             
        
        
        
<span>Curiosity. Curiosity is a fundamental characteristic of a good scientist. ...Creativity. ...Accuracy of Observation. ...<span>Skepticism. 
but they dont need playing around not being skepticism.</span></span>
        
                    
             
        
        
        
Answer:
               Cataplexy is condition in which sudden loss of muscle tone occur.
Explanation:
                      Cataplexy is sudden and uncontrollable muscles weakness or paralysis that comes on during the day and is often triggered by a strong emotion such as excitement or laughter. Cataplexy occur during working hours. A more severe episode may involve total body collapse. In cataplexy the voluntary muscle tone occur. This condition is mostly associated with narcolepsy which is a sleep disorder.. Symptoms of cataplexy have;
1) Dropping eyelid.
2) Jaw dropping.
3) Neck muscle weakness.
 
        
             
        
        
        
Through the umbilical vein.
        
             
        
        
        
Answer:
In plant cells, osmotic pressure can cause changes in the size of the central vacuole, which shrinks or swells as water moves into or out of the cell.
Explanation:
Hope this helped, Have a Great Day/Night!!