The risk of introducing a natural enemy to control an invasive species is that: The natural enemy may introduce genetic diversity into the invasive species. Thus, option "D" is correct.
<h3>What is non-native?</h3>
 Non-native species are considered to be invasive only when they cause harm. 
Some of the features that increase the possibility of a non-native species becoming an invasive species are they reproduce easily, they are habitat generalists, they out-compete other plant species, possess the tendency to produce abundant seeds, and are not influenced by the native diseases and pests.  
Thus, option "D" is correct.
To learn more about  invasive Species click here;
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The Nitrogen Bases forms the rungs ladder.
        
             
        
        
        
Answer:
Lithium
Explanation:
<em>"Like the other alkali metals, lithium has a single valence electron that is easily given up to form a cation. Because of this, lithium is a good conductor of heat and electricity as well as a highly reactive element, though it is the least reactive of the alkali metals."</em>
 
        
                    
             
        
        
        
Answer:
An invasive species can be any kind of living organism—an amphibian (like the cane toad), plant, insect, fish, fungus, bacteria, or even an organism's seeds or eggs—that is not native to an ecosystem and causes harm. They can harm the environment, the economy, or even human health.
Explanation: