Answer:
covalent, which repel water molecules
they contain ions, which make the entire molecule hydrophilic
they are less dense than liquid water, so they float on the surface
most of their bonds are nonpolar covalent, so they are not attracted to water
Your answer
Explanation:
 
        
             
        
        
        
Answer:
I think the awnser is D. Hope it helps 
 
        
             
        
        
        
<span>Two locations can differ in their food, religion, customers, based on their heritage. Much of the time, the history of a nation often determines where it stands today. Examples include Great Britain. A nation that always had a singular ruler and even in today's age, there is a King and Queen, something that is not often seen among other nations.</span>
        
             
        
        
        
Graduating from high school this year makes me feel a bit sad. Biology was such a fun but crazy class.
Enough of my sentiments; I'm here to help, :-).
This answer is dependent upon what ecosystem you choose your project over. 
So, abiotic factors are nonliving things in an ecosystem. Biotic factors are living organisms and anything alive. 
For instance, if you choose a pond for your ecosystem then the water, soil, maybe trash would be abiotic factors. Some could argue there is living material within the water and soil but those abiotic factors are not alive. I mean water is not alive but it could be a home to biotic factors like microorganisms such as protozoans and worms. The grass and trees and animals around a pond would be biotic factors. 
Hope you get the idea. if there's any questions then leave a comment and I'll help. Good luck!
        
                    
             
        
        
        
False is the answer let me know if I’m Right!!!