Plastic.
The Canadian city that pollutes the most is probably Toronto.
plankton?
i love you! KISSME!
the most common thing to draw is a bowl of fruit!
In sea/oceans waters and in salt mines.
sodium chloride
There is no such thing as a most common denominator.
Cigarettes
Water (H2O) and salt (NaCl).
Most common is the thing that happens most, and least common is the least ocuring thing. For example it is most common to open chess with middle pawn forward. And it is least common to move one of the far pawns first.
The most common thing you would measure mass in would be grams and kilograms
"your mom" thats the most written thing