The correct answer is - increased competition.
If an ecosystem experiences an increase in its biodiversity, than the result of it would be increased competition. The increased competition will be for food sources, water sources, territory. The reason why increased competition will occur is that there are only limited mounts of food sources, water sources, and territory in the ecosystem. There's also certain amount of niches in the ecosystem, and once all of them are occupied by some species, any other that is specialized for that niche will be competitor plus. This increased competition will lead to high evolutionary pressure, which will result in relatively quick adaptations and specialization in order to survive.
 
        
                    
             
        
        
        
Answer:
The word that best complete the sentence is VIRUSES.
Explanation:
There are different types of microorganisms, one of them is virus. Viruses are different from other forms of microbes because they need living cells to become active; outside living cells they are inactive and did not exhibit any of the features of living things. 
Viruses only grow and multiply when they are withing the cells of another living thing; they do not have the capacity to survive and reproduce outside a living host. 
 
        
             
        
        
        
Answer:For number three it is summer
Explanation:
 
        
             
        
        
        
What is part B I need more info.
        
             
        
        
        
Answer:
The organic compounds that scientists use to cut copy and move segments of DNA are enzymes