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.
Homemade slime is typically made of craft glue, food coloring, water and Borax powder. It's also possible to make slime from different ingredients, such as liquid starch, powdered fiber or cornstarch. The following instructions are for traditional slime.