What is the symbol for out-of?

Where do leeches live? What Kind of people live in Gobi? Why do plants need molydenum? What are 5 types of joints and where are they? Where do cruise boats go during a tsunami? How could you confirm the presence or absence of SE in a food product? The cyclic pathways of photosynthesis produce? What is a laboratory grown aquamarine and does it have the same chemical composition of a natural aquamarine? What years were in the second century? What are the natural resources used to make a pair of shoes? What type of root system does aloe have? What bonding is Ag-Cl? What effect of blueprint planning? Is the rate of diffusion in a steeper concentration gradient slower than in a shallow concentration gradient? What are two groups of animals that fertilize externally? What would be the benefits of using a natural biological method of clean up vs a man made method? Which element has the most number of allotropes? What happens when atoms lose their valence electrons? What cause an overdose of dopamine? What is an iron nail reactive with when forming rust?

What is the symbol for out-of?