They die with the animal or plant. They evaporate into the atmosphere. They are recycled back into the environment. They change into different elements.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Animals and plants are made up of a number of different chemical elements. What happens to all of these elements when animals and plants die?
Possibilities:
- They die with the animal or plant.
- They evaporate into the atmosphere.
- They are recycled back into the environment.
- They change into different elements.

They are recycled back into the environment.