Rare, all-red auroras are produced by high-altitude oxygen, at heights of up to 200 miles. Nitrogen produces blue or purplish-red aurora. The connection between the Northern Lights and sunspot activity has been suspected since about 1880.
In developed countries, the average birth weight of a full-term newborn is approximately 3.4 kg (71â2 lb), and is typically in the range of 2.7â4.6 kg (6.0â10.1 lb).
Such babies are needed to be kept in NICU. Average body length of newbornâ 14ââ-20ââ (35.6cms â 50.8cms). There is a little difference in length and weight of boy baby and girl baby. Average length of male baby is 50.6 cms. and that of female baby is 50.1cms. 4% babies are born below 46 cms of length.