Answer:
B- finding new sources of freshwater
Explanation:
To solve the world water crisis we need to conserve water. Finding new sources of water increases the rate of drought, famine and water scarcity in zones. It can also act as a factor of desertification. We need to reduce, reuse and recycle when trying to conserve a resource.
 
        
             
        
        
        
Let's call the colour alleles C for dominant purple, and c for recessive white.
We have crossed Cc with Cc.  So if we put that in a Punnett square, we'd have a CC, two Cc and a cc.  That would give us a 3:1 ratio of purple to white, so you'd expect 15 purple and 5 white flowers. :)
        
             
        
        
        
A, sodium.....................................
        
             
        
        
        
Answer:
Reproduce, have Genetic Material (Nucleic Acids) and Adapt