Answer:
Paul uses Irradiation. The technique uses gamma rays
Explanation:
 
        
             
        
        
        
Answer: d- because a model is never exactly the same as the thing it represents
        
             
        
        
        
Herons are very large birds, and due to their intimidating size, they have very little predators. They have a varied diet and consume many different prey (fish, snakes, amphibians, and probably many other small animals). If the population of herons would decrease, the population of the other organisms living in the same environment would increase since they would have a greater chance at survival (since they are not being eaten by the herons)
        
             
        
        
        
Answer:
Both A and C is the right
 
        
             
        
        
        
4. Gene Pool is not a mechanism, thus your answer!