In the formal language of economics, X and Y are substitutes if the demand for X increases when the price of Y increases, or a positive cross elasticity of demand.
Potting mix is the material that goes into a garden pot before you put seeds and plants into it. 1  It keeps the plant in place. 2  It holds water for the plantâs roots to soak up.  It contains nutrients that feed the plant.
Hashish is a related form of the drug, made from the resins of the Indian hemp plant. Also called chocolate, hash, or shit, it is on average six times stronger than marijuana. âCannabisâ describes any of the different drugs that come from Indian hemp, including marijuana and hashish.