It depends what kind of roundworm you are talking about. Roundworms are an enormous group of worms that contains over 28,000 described species. So they are both carnivorous, omnivorous, and are neither carnicores nor omnivores all at once.
There are many kinds of roundworms. I don't think any are herbivores. Most are carnivores, but some are omnivores.
omnivores
omnivores
omnivores
herbivores
herbivores
They are mostly herbivores. Some are carnivores Some are omnivores Some are herbivores
omnivores ,herbivores and carnivores
Because Omnivores are both herbivores and carnivores
omnivores
omnivores
herbivores
they are herbivores
herbivores
They are mostly herbivores. Some are carnivores Some are omnivores Some are herbivores
Omnivores
whales are omnivores
They are omnivores
They are omnivores