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.
Collect your dried up Play-Doh in a bowl. Keep the same colors together to prevent the Play-Doh dyes from mixing and forming a brownish color. Play-Doh is mostly made of flour, water, and salt, so adding life back to the hardened dough can be as simple as adding back the water thatâs evaporated.