Is a manta a omnivore?

The are carnivores. Mantas generally eat plankton, fish larvae and small organisms that are filtered out from the water by their gill rakers, a type of filter feeding that is called ram-jet feeding.

That really depends on the type of lizard. Some lizards eat insects (making them carnivores), others eat insects, other lizards and plants (making them omnivores), and still others eat only plants...

no it is a cousin of the velociraptor they are hunters and they are in Jurassic park 2

If by 'you' you mean human beings then we are omnivores because we eat both meat and vegetation (vegetables).This question is kind of confusing... Because some religions have rules that they may not...