Barack Hussein Obama II was born on August 4, 1961, in Honolulu, Hawaii. His mother, Ann Dunham, was born on an Army base in Wichita, Kansas, during World War II. After the Japanese attack on Pearl Harbor, Dunham's father, Stanley, enlisted in the military and marched across Europe in General George Patton's army.
Best Answer: It refers to the heat change fora reaction. Means that the reaction absorbs heat from and emits heat to the environment. A delta H rxn with a positive sign means that heat is taken from the environment.Such a reaction is termed as an endothermic reaction. A delta H rxn with a negative sign means that heat is emitted or given to the environment.Such a reaction is termed as an exothermic reaction.
Being Rh-negative means you don't have a certain protein (D antigen or the Rh factor) on the surface of your red blood cells.If you do have it, you're Rh-positive.So the terms Rh-negative and Rh-positive are really just terms that further define what type of blood a person has, beyond the general blood type categories of A, B, AB, and O.f you do have it, you're Rh-positive. So the terms Rh-negative and Rh-positive are really just terms that further define what type of blood a person has, beyond the general blood type categories of A, B, AB, and O.