Fact 1: Mollusks are a major food source for other organisms, including humans.

Fact 2: Many organisms are omnivores with variable diets.

Given the two facts above, answer the question "What are mollusks used for?" with the following options: 
- a herbivore diet
 - survival
 - a vegetarian diet
 - Converting waste.
 - Catch prey
 - an omnivore diet
 - an egg diet
 - animal transport


 

      an omnivore diet   