The only hyena that is an omnivore is the striped hyena. Otherwise, they are all carnivores.
producer
omnivore
In a savanna food chain, grass is eaten by zebras, which are then hunted by lions. The lions may also scavenge on the remains left by hyenas. This creates a simple food chain of grass → zebra → lion → hyena.
a hyena
both meat and plants
Without seeing what the following is it a person will not be able to know how to show it is a food chain omnivore. To do this the information on what is being referred to is needed.
There are no animals on Antarctica; there is no food chain there: it's too cold.
The swift fox is a secondary consumer and an omnivore.
the autotroph is eaten by the herbivore, and the omnivore eats both autotroph and herbivore
The organism that produces food in the food chain for other organisms is the producer. The producer is usually a green plant that is eaten by an omnivore or a herbivore. And the food chain continues
The red fox is a secondary consumer and an omnivore.
Could be a wild boar, a bear, or a monkey.