Circle should be on number 13 because three chromosomes means that there’s a disability or abnormality.
Plz mark as brainleast plzzz :)
        
             
        
        
        
Answer:
The answer to the first question should be b. 
Explanation:
Throughout your body, minerals help build bones and provide structural support. In your mouth, calcium helps harden your enamel and strengthen your jawbone. Hope this helps!
 
        
             
        
        
        
Answer:
40x, 100x, and 400x  
Explanation:
The ocular lens (closest to your eye) usually has a 10x power.
The objective lenses (closest to the object) usually have powers of 4x, 10x, and 40x.  
Combined, they give magnifications of 40x, 100x, and 400x.
 
        
             
        
        
        
Answer:
More force from a football player's throw can accelerate a football faster.
Explanation:
Force = mass * acceleration
 
        
             
        
        
        
Answer:
Rabbit's population will reduce drastically
Explanation:
As it is clear from the given description, that drought adversely affects the production of flower and berries and hence the population of rabbits depending on berries and flowers will be adversely affected. Therefore, there are high chances of rabbits dying because of insufficient food during drought
 Also, the foxes and hawks feed on the babies of rabbit. This further reduces the population of rabbits as the new ones are killed before attaining fertility.
Overall due to both predation (by foxes and hawks) and the drought the  population will reduce drastically.