What is the trophic level of the moth larvae in the owl's ecosystem?

Moth larvae eats leaves of the plant. It is an herbivore, a primary consumer in food chain. The primary consumer occupies the second trophic level in owl's ecosystem. The moth larvae in turn is eaten by small bird, a secondary consumer. Thus small bird occupies the third trophic level. Small bird is eaten by an owl, a top consumer that occupies fourth trophic level.

c. heat from the poles back down towards the equator.

i think the answer is a.keratin is the pigment responsible for skin color.