Which row identifies three secondary consumers as identified in the food web?

In a food web, the secondary consumers occupy the second row.  

Explanation:

The bottommost row is occupied by the producers which produces their own food like the plants

Primary consumers in the first and secondary in the second row from the bottom row

The consumers consume the primary producers for energy production. Consumers are further classified as primary, secondary and tertiary consumers.

While the primary consumers are herbivores eating only plants, the secondary consumers are omnivores and consist of both ominivores (bears) and carnivores (snakes). The nutrition of secondary consumers is heterotropic nutrition. They are found in all type of ecosystems including terrain and aquatic systems.  

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

i need an image of the diagram