Create a terrestrial food chain depicting four trophic levels.

Dear Student, 
The trophic level is the step or level includes in a food chain It includes Producers that includes plants.
 
First tropic level includes herbivores like a cow, goat etc.
 
Second tropic level includes carnivores like a tiger, lion etc.
 
 Tertiary tropic level includes omnivores like humans, bear etc
 
Grass------>Grasshopper -------->shrew------->owl 
Regards

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Dear student,
Grassland food chain :

Grasses → Grasshopper →  Toad → Snake → Hawk

Usually all food chains are plant food chains because they start with plants. 
Hope this information will clear your doubts about this topic. 

Regards

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A terrestrial food chain depicting four trophic levels is as follows- grass (producer), eaten by a mouse (primary consumer), eaten by a snake (secondary consumer), eaten by a hawk (tertiary consumer).
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Dear student,

Example of terrestrial food chain:

Grass ---- Grass Hopper --- Frog --- Snake --- Hawk

Hope this answer is helpful :)
Regards!!
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