Answer:
Predators are animals that hunt and kill other animals for food. Both carnivores and omnivores can be predators. The other classification of carnivores and omnivores is scavengers, which means they feed off of animals that are already dead. Predators include lions, sharks and eagles.
The answer you are looking for is Collagen.
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Definite volume is doesn’t possess a definite volume so therefore the answer is c
I think the answer is d ... hope this helps