It would have to have a density greater than the density of Mercury. For example, if an abject had a density of 14.5 g/cm^3, it would sink when put in Mercury. Hope this helps! :D
        
             
        
        
        
Your answer is A hope this helps
        
             
        
        
        
The Cusichaca Andina is the name of an organization, which is attempting to preserve a small, pink potato from the Andes, known as huana. It is considered one of the perfect crops for uncertain times, as it resists extreme rain, frost, and drought. It can be stored for two to three years.  
The organization is also trying to revive the irrigation facility, which Incas utilized in the Andean region, and researching other conventional crops, like amaranth, quinoa, squashes, and potatoes.  
 
        
             
        
        
        
Answer:
D.
Explanation:
Viruses are oftentimes short lasted and disappear quickly.
 
        
             
        
        
        
Answer:
B
Explanation:
An ionic bond is formed when an atom usually metallic, loses an electron to become positively charged and another atom usually non-metallic, gains such electron lost and becomes negatively charged..