What is synonym of decay organisms?

Answer 1

The synonym for declay is rotting

Example:

Mummies are dead bodies that have been wrapped in strips of cloth and kept for thousands of years. Many museums have at least one Egyptian mummy.

The early Egyptians believed that the dead continued to live in the next world after they died. They believed that a person had the same body in the next world, so they wanted to keep the body in good condition. They worked hard to keep bodies from decaying. Thousands of years later, scientists found the bodies still in good shape for all the time that had passed.