Which organism lives off remains or wastes of organisms? 

A)  herbivore 
B)  omnivore 
C)  scavenger 
D)  carnivore

A scavenger is an organism that feeds on the remains or wastes of dead organisms. This includes animals like vultures, hyenas, and some types of insects. Herbivores only eat plants and carnivores only eat meat, while omnivores eat both plants and meat but may not necessarily feed off of remains or wastes.