Final answer:
When an animal dies, the elements that made up its tissues can be used by primary producers to create new organic molecules.
Step-by-step explanation:
When an animal dies, the elements that made up its tissues can eventually be used again by primary producers to create new organic molecules. This is because the matter that makes up living organisms is conserved and recycled. The recycling of inorganic matter between living organisms and their environment is called a biogeochemical cycle, which involves geologic processes, such as weathering, erosion, and the movement of continental plates.