The element "Oxygen".
It is not common for crackers to have microorganisms unless they are contaminated or not stored properly. If crackers are made and stored in proper conditions, they should not have harmful microorganisms present. It is recommended to check the expiration date and storage instructions for the crackers you are consuming.
Magnesium
There are A + Z nucleons in an element
The sun's main present element is hydrogen.
Iodine
silicon
Mercury
Iron.
If it is an element, then by definition there is nothing else present.
Mg is present in the chloroplast.
Nitrogen