Grazing food chain consists of
1
Sun → green plants → herbivores → first order carnivores → second order carnivores
2
Sun → second order carnivores → herbivores → green plants → first order carnivores
3
Second order carnivores → first order carnivores → herbivores → green plants → Sun
4
Herbivores → green plants → Sun → first order carnivores → second order carnivores