GERD is often diagnosed simply by finding no improvement in heartburn symptoms in response to lifestyle changes and acid reflux medication. Gastroenterologists may also arrange the following investigations:
Trading blocs. A regional trading bloc is a group of countries within a geographical region that protect themselves from imports from non-members. Trading blocs are a form of economic integration, and increasingly shape the pattern of world trade. There are several types of trading bloc:
Confidence votes 35. A clade is a group consisting of an ancestor and all its descendants-whether the ancestor is a species, a specific population, or even an individual.A group of organisms with a shared ancestor.nswer by donnie meyers. Confidence votes 35. A clade is a group consisting of an ancestor and all its descendants-whether the ancestor is a species, a specific population, or even an individual. A group of organisms with a shared ancestor.