Scavengers break down wastes into simple, organic substances.
a. true
b. false

It's going to be the first one which is "A" for true

A. true
A scavenger is an organism that mostly consumes decaying biomass, such as meat or rotting plant material. Many scavengers are a type of carnivore, which is an organism that eats meat. While most carnivores hunt and kill their prey, scavengers usually consume animals that have either died of natural causes or been killed by another carnivore.