It is the largest hot desert in the world, as well as the second l â¦ argest desert on earth after Antarctica. The Sahara covers all or part of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Sudan, Tunisia and Western Sahara.The word Sahara means desert in the Arabic language.he deserts, tropical forest, and tundra are considered to be  fragile ecosystems because of the long regeneration time when  vegetation has been destroyed. They are also fr â¦ agile because of the  low participation.
Shire US Manufacturing Inc.: ADDERALL XR, a CNS stimulant, is indicated for the treatment of attention deficit hyperactivity disorder (ADHD). (1) Children... Drug Inserts. com
Vyvanse vs. Adderall. Adderall and Vyvanse are prescription psychostimulant drugs used to treat attention deficit hyperactivity disorder (ADHD). While Adderall is sometimes the more effective of the two, Vyvanse is considered less addictive. Adderall is a combination of dextroamphetamine and amphetamine; in Vyvanse, the active ingredient is lisdexamfetamine.