Withdrawal symptoms vary with the substance, but some symptoms may include increased heart rate, shaking, insomnia, fatigue, and irritability. Substance abuse is continued use of a substance in spite of school-or work-related or interpersonal problems, but the user has not gotten dependent on the substance.The individual who abuses a substance may experience legal problems and may have problems fulfilling responsibilities, such as caring for a child.ithdrawal symptoms vary with the substance, but some symptoms may include increased heart rate, shaking, insomnia, fatigue, and irritability. Substance abuse is continued use of a substance in spite of school-or work-related or interpersonal problems, but the user has not gotten dependent on the substance.
ton. n. 1. A unit of weight equal to 2,000 pounds (0.907 metric ton or 907.18 kilograms). Also called net ton, short ton. 2. A unit of weight equal to 2,240 pounds (1.016 metric tons or 1,016.05 kilograms). Also called long ton. 3. A metric ton.
The 'long ton' comprises 2240 pounds,  whereas the 'short ton' comprises 2000 pounds.    The 'tonne' (spoken as, 'metric ton') is a non-SI unit,  equivalent to a mass of 1000 kg.    A mass of one tonne is equivalent to 0.984 206 (long) tons. Tons of terms   A gross ton (sometimes called the long ton) is equal to 2240 pounds. A metric ton (sometime referred to as the tonne) is 1000 kilograms, which is eq â¦ uivalent to 2205 pounds. 16 people found this useful.