The answer is Iron.
Iron overdose or poisoning it's when the iron intake is very superior to normal and can become fatal. This term has been associated with young children in the united states due to the large consumptions of iron supplement
pills, which look like sweets. Just 3 grams can be fatal for a two year old.
Internal humidity can be controlled by: removing moisture at source, for example, using an extract fan in the bathroom, using a rangehood in the kitchen, venting a dryer to the outside and using only externally vented gas heaters. passive ventilation by opening windows.
Answer:
LowGDP, low standard of living, few capital goods, few resources,
Explanation: