The element found in all organic compounds and living organisms is carbon.

Here's why:

* Organic Compounds: The very definition of an organic compound is a molecule containing carbon. This includes a vast array of molecules like carbohydrates, proteins, fats, and nucleic acids.

* Living Organisms: All living organisms are made up of organic molecules. These molecules carry out essential functions, like providing energy, building structures, and storing genetic information.

Let me know if you'd like to know more about carbon and its importance in life!