Any low sandy island that is parallel to the mainland and protects it from storms. (See Cape Hatteras.) Note: Barrier islands normally change location every ten to thirty years, a fact that makes coastline management a major problem in environmental policy.
How long does nicotine stay in your system for is indicated below for each type of test used: How long does nicotine stay in your saliva? Using a swab, a sample of saliva is obtained and then a test strip is placed in the saliva for 20 minutes at which time a result will be shown. Saliva testing can find traces of nicotine for two to four days after you have quit using tobacco or nicotine products. How long does nicotine stay in your blood? Nicotine can show up in your blood from 1 â 3 days after your last fix depending on how heavy a smoker or a dipper you are.
1 However, if you often smoke or you are passive smokers, nicotine can stay for a period of 15 to 20 days in urine. After this period, no traces of toxic can be found in your urine.  In saliva: Nicotine stays in your saliva up to 4 days.