They may cover all or part of the body and are usually very itchy. 1  Hives usually break out first on the covered areas of the skin such as the trunk and upper parts of the arms and legs.  Wheals appear in batches. Each wheal may last from a few minutes to six hours.
Early years [edit]. Arrhenius was born on February 19, 1859, at Vik (also spelled Wik or Wijk), near Uppsala, Sweden, the son of Svante Gustav and Carolina Thunberg Arrhenius.oday, Arrhenius is best known for his study published in 1896, on the greenhouse effect.
Making the world better, one answer at a time. An Arrhenius base is a substance that increase the concentration of OH-ions present when it is added to water.aking the world better, one answer at a time. An Arrhenius base is a substance that increase the concentration of OH-ions present when it is added to water.