Solution a is the most acidic.
In a pH scale of 1 to 14, the smaller the pH is, the more acidic is. In opposite, the higher the pH is, the more alkaline it is. We call substances with pH below 7 as acid, and above 7 as alkali, while 7 as neutral.
Therefore, comparing the 4 solutions, solution a has the lowest pH, 3, so it is the most acidic.
        
             
        
        
        
Answer:
A. Genetic Biodiversity
Explanation:
All in all, many products that make up food, medicine, and supplies for humans are enhanced by the components of biodiversity.  
Similarly, a lot of components that make up our medicines usually come from environments that have extravagant amounts of biodiversity. 
Case in point, the country of Madagascar is where most of the formulas of our medicines come from, and it has some of the most vibrant & biodiverse tropical forests in the world.
 
        
             
        
        
        
<span>the stratum lucidum is an epidermal layer. It is a clear layer of dead skin cells. Even under a microscope it is not visible, only under a light microscope can it be viewed. It is only found on the palms of ones hands and the soles of the feet.</span>
        
                    
             
        
        
        
Answer:
NK cells<em><u> perform all of these roles</u></em>
<em><u /></em>
hope this helps
-lvr
 
        
             
        
        
        
Answer:
Land use goes up as human population goes up. This is because the more people there are alive, the more land that people will be using. Hope this helps :)