<span>B- tree > insect > frog> snake> hawk
The food chains are represented by organisms interconnected by red arrows that point in the direction of the one that's eating. So, the relation that is explicit by the arrow is that the organism from where the arrow departs is eaten by the organism where the arrow is pointing towards to. So, the food chain that can be observed accurately in the food web is: the tree is eaten by the insect, the insect is eaten by the frog, the frog is eaten by the snake, and the snake is eaten by the hawk.
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It's A, a limiting factor is something that constrains the population size
        
             
        
        
        
Answer:
First filial generation.
Explanation:
Mendel is known as the father of genetics. He formulated the law of segregation and law of independent assortment by working on the pea plant.
The Mendel first crossed the pure breed line parents and obtained the first filial generation. The F1 generation is obtained by the cross breeding of the parental generation.
Thus, the correct answer is option (D).
 
        
             
        
        
        
C. on the tongue,lining of the cheeks and on the roof of the mouth.