75% of youths complete high school in the normal amount of time (5 years). Source: Statistics Norway (SSB.NO) June 13th 2019.
The amount of mercury (Hg) in drinking water in Norway is very low, < 0.05 mirograms/liter. (DATE MISSING)
Source: The Norwegian Institute for Public Health
NORWAY:
20% of (2nd to 8th graders enrolled in school) showed indications / diagnoses of asthma. Source: Norway's Asthma and Allergy Association (NAAF). Nordlandsstudien (1995-2009 p: 6000)
5% of children require medical treatment for asthma (estimate).
25-30% of youths have allergic symptoms.
Source: the Norwegian Institute of Public Health
TANZANIA: