Arrange the following in a food chain: Fish, Algae, Small animals, Big Fish

What are the various steps of food chain called?

Construct a food chain comprising the following: Snakes, Hawk, Rats and plant.

Which organisms belong to third and fourth trophic levels in the food chain comprising the following?

Rats, Plants, Hawk, Snakes

Which one term in the following includes the others?

Air, flora, fauna, environment, water, sunlight, soil