C. humus
the answer is humus cause it really has nothing to do with soil.
        
                    
             
        
        
        
Answer:
Population is a collection of individuals of a species living in a defined area
Explanation:
Population:This is a collection of individuals of the same species occupying the same space and able to interbreed freely with one another when individuals of different sexes are brought together.
 A species of animals may comprise a single cohesive population or may contain many geographical distinct populations.
Example:A population of Agama lizards in a Campus located in China.The whole human race, Homo sapiens comprising the black, Mongolian,red and white is a population.A population of <u>Cercopithe</u><u>c</u><u>us</u> <u>erythrogaster</u><u> </u>(Monkeys).
 
        
             
        
        
        
<span>B. the complementarity of DNA and RNA
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Answer:
1 for the first blank and I think 3 for the second blank
here's ur free pic of the day, Charlie! ^^
 
        
             
        
        
        
Answer:
the definition of migration is option B