Hydrophobic molecules tend to be nonpolar molecules that group together to form micelles rather than be exposed to water. Hydrophobic molecules typically dissolve in nonpolar solvents (e.g., organic solvents).
        
             
        
        
        
Since Group 2 alkali earth metals have 2 valence electrons, they tend to lose those 2 when forming ionic bonds. And the Loss of Electrons = Oxidation (L.E.O. for short). Therefore this group, including Mg and Ca, have an oxidation of [+2].
So the correct answer is C) +2
        
                    
             
        
        
        
2H(+) + SO4(2-) + Ca(2+) + 2I(-) -> CaSO4(s) + 2H(+) + 2I(-)
The signs in brackets are the subscripts for the charge of the ion. This is the complete ionic equation. The net ionic equation is:
Ca(2+) + SO4(2-) -> CaSO4
        
                    
             
        
        
        
Answer:
The process of selection conducted under human direction.
Explanation:
 For example, by allowing only like individuals to breed, breeders have created the great variety of dog breeds and crop plants
 
        
             
        
        
        
Answer:
Thermo means heat/related to heat and haline means salty/of salt