The freshwater wetland is type more clean and produces much less “natural pollution”, as too the lake or pond have more creatures in them such as fish, crabs, etc
        
             
        
        
        
Answer:
If the water is initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may make hot water freeze faster than cold water in some cases.
Explanation:
 
        
                    
             
        
        
        
A single stranded DNA  (oligonucleotides) can hybridize with (d) both complementary DNA and complementary RNA. 
DNA is the Deoxyribonucleic Acid. It is the genetic material present in majority of organisms. The nitrogenous bases present in DNA are: Adenine, thymine, Guanine and Cytosine.  DNA is a double stranded structure hence it forms hydrogen bonds with a complementary strand. The complementary strand can be of a DNA or RNA.
RNA is the Ribonucleic Acid. It also is a genetic material present in very few organisms. RNA is less stable than the DNA and may be either single stranded or double stranded. The nitrogenous bases of RNA are: Adenine Uracil, Guanine and Cytosine. 
To know more about DNA and RNA, here
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Answer:
C
new combinations means variations, and the more the variations there is of a species, the more diverse they are
 
        
             
        
        
        
electricity, chemistry, and astronomy