New road tax disc rules â how they affect motorhome & caravan owners. From October 1, you will no longer be required to display a tax disc in your motorhome or caravan towcar under new road tax disc rules announced last year.here will also be a new way to pay for your road tax. Currently you need to buy either six monthsâ or a yearâs tax up-front, but from 1 November youâll also be able to pay by monthly direct debit over 12 months.
substance use substance abuse. substance use (omaha) in the omaha system, a client problem in the health related behaviors domain, defined as the inappropriate consumption of medicines, drugs, or other materials including prescription drugs, over-the-counter drugs, street drugs, alcohol, and tobacco.
Supplement. In biology, the term substance is used to refer to the material constituting an organ, e.g. ground substance or spongy substance. In chemistry, all compounds are substances but not all substances are compounds since pure elements are also chemical substances.oun, plural:substances. (1) The physical matter, material or that of which an organ or body consists. (2) (chemistry) A material, matter or that which has definite chemical composition and distinct properties. (3) The most vital or essential part of something. (4) Drugs, as in substance abuse.