The answer is invasive species.
Invasive species are species that are not native to specific ecosystem,
but they have a capability to spread widely through the ecosystem, This way
they can threaten native species of the ecosystem or cause
environmental harm. 
<span>After being introduced into the Black Sea, they greatly affect local
ecosystem. In the new area, they have no natural predators and are able to
spread. If they spread beyond the area they are introduced, they
become invasive species which can overgrow native biotopes and are
a great threat to the local biodiversity. This could lead to the extinction
of some native species.</span>
 
        
             
        
        
        
<h2>Answer and Explanation </h2>
The genetic recombination is a biological process in which the recombination of homologous DNA strand occurs. There are three types of genetic recombination in human being that is :
Human Reproducation that is by introducing new gene combination to the population.
By cell Mutation is it  that is changes in the DNA.
By Gene flow it is that is by movement of a gene from one population to another population.
 
        
        
        
In order for natural selection to take place we must have "variety in a population". This variety of traits is what allows natural selection to "pick" the most favorable traits. 
        
             
        
        
        
B, the centrioles
going to type randomly to fill up twenty words jfkdjv disks kfkskdka
        
             
        
        
        
What I know is that amino acid has side chain, amine groupe ,and  groupe of carboxyl so what make them difference is side group where the is 20 different R-group which give each individual characteristics