Respuesta :
Example 1:
Human being (Man) is an omnivore, i.e. its feeds on both plants and animals.
When man feeds on plant, he becomes a herbivore (occupying the Second Trophic level).
When he eat animals (meat), he becomes a carnivore thus occupying higher tropic level in the food chain.
Example 2:
Consider the following three food chains:
First Chain: Grass (T1) → Grasshopper (T2) → Lizard (T3) → Hawk (T4)
Second Chain: Grass (T1) → Grasshopper (T2) → Hawk (T3)
Third Chain: Grass (T1) → Grasshopper (T2) → Frog (T3) → Snake (T4) → Hawk (T5)
In the First food chain, Hawk occupies the Fourth Trophic level, i.e. it is a Secondary carnivore.
In the Second food chain, Hawk occupies the Third Trophic level, i.e. it is a Primary Carnivore.
In the Third food chain, Hawk occupies the Fifth trophic level, i.e. it is a Top-level carnivore.
Thus, Humans (Man) and Hawk occupies more than one trophic level in the ecosystem.
Human being (Man) is an omnivore, i.e. its feeds on both plants and animals.
When man feeds on plant, he becomes a herbivore (occupying the Second Trophic level).
When he eat animals (meat), he becomes a carnivore thus occupying higher tropic level in the food chain.
Example 2:
Consider the following three food chains:
First Chain: Grass (T1) → Grasshopper (T2) → Lizard (T3) → Hawk (T4)
Second Chain: Grass (T1) → Grasshopper (T2) → Hawk (T3)
Third Chain: Grass (T1) → Grasshopper (T2) → Frog (T3) → Snake (T4) → Hawk (T5)
In the First food chain, Hawk occupies the Fourth Trophic level, i.e. it is a Secondary carnivore.
In the Second food chain, Hawk occupies the Third Trophic level, i.e. it is a Primary Carnivore.
In the Third food chain, Hawk occupies the Fifth trophic level, i.e. it is a Top-level carnivore.
Thus, Humans (Man) and Hawk occupies more than one trophic level in the ecosystem.