If carbon in organic compounds are passed through the food web from herbivores to carnivores, then carbon in organic compounds are passed through the food web from what?

Answer choices:
- it helps plants in growing
 - Burning fuel and air
 - members of their own species
 - people to dogs
 - herbivores to carnivores
 - carnivores to plants
 - passenger pigeons
 - predators to prey

 

     herbivores to carnivores     