What does the term 'to promote the general welfare' mean to you in the preamble of the constitution of the US?
Relative humidity. Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest.
Rh incompatibility is a concern only when the mother has a negative blood type and the child has a positive one. A RhoGAMÂ® injection is used to prevent a complication of pregnancy known as Rhesus disease, or hemolytic disease, of the newborn.