Final answer:
In the food chain consisting of Insect, Hawk, Grass, Snake, Frog, the Hawk will have the highest concentration of non-biodegradable chemicals due to a process called biomagnification. This process results in an increase in the concentration of toxic substances as you move up through the food chain.
Step-by-step explanation:
The organism with the highest concentration of non-biodegradable chemicals in the given food chain (Insect, Hawk, Grass, Snake, Frog) will be the Hawk. The reason for this is a biological phenomenon known as biomagnification.
Biomagnification denotes the process where certain toxic substances accumulate in higher concentrations as one moves up trophic levels in a food chain. These substances are often fat-soluble and not easily broken down or excreted, leading to their accumulation in living organisms at each trophic level. The higher an organism is on the food chain, the more bioaccumulated substances they will have in their fat reserves, as they consume organisms from the lower levels.
So, in this-food chain, insects eat grass, frogs eat insects, snakes eat frogs, and hawks eat snakes. At each trophic level, the concentration of non-biodegradable chemicals increases, with the Hawk, being at the apex of the food chain, having the highest concentration.
Learn more about Biomagnification