By looking at how the birds interact with fruits in different environment, you can determine where birds are from, what beaks specialize in eating what kind of food, and how those traits came to be (Darwinism)
        
             
        
        
        
Answer 
The main reason being the amount of food available.
Explanation:
Think of it this way:
If an animal is trying to find food but another species is looking for the same prey then its going to be increasingly difficult for the species to find prey and if there's not enough of the prey species then the population of the predator to go down.
That is why its considered a limiting factor.
 
        
             
        
        
        
Answer:
Renal cortex
Explanation:
The renal medulla of a kidney is surrounded by renal cortex. The renal cortex is the granulated layer. It is the renal cortex in which the renal corpuscle (glomerulus and Bowman's capsule) are present. The renal cortex is reddish brown in color. This is due to the fact that most of the renal arteries deliver the blood to the cortex.
 
        
             
        
        
        
Answer:
3 criteria used to determine whether is REAL SCIENCE are temperature, precipitation and atmospheric pressure
Explanation:
Temperature forms the basis of a weather condition, it depicts the role of some other criteria, other factors are precipitation and atmospheric pressure