Lightning, forest fires and peat fires can start coal fires. But they are often caused by mining accidents and bad mining practises. In Indonesia, the same fires used to clear large tracts of rainforest ignited over 300 coal fires since the 1980s.
OVERACHIEVER Dictionary entry overview: What does overachiever mean? â¢ OVERACHIEVER (noun) The noun OVERACHIEVER has 1 sense: 1. a student who attains higher standards than the IQ indicated Familiarity information: OVERACHIEVER used as a noun is very rare.
Overjet or horizontal overlap. Overbite medically refers to the extent of vertical (superior-inferior) overlap of the maxillary central incisors over the mandibular central incisors, measured relative to the incisal ridges. The term overbite does not refer to a specific condition, nor is it a form of malocclusion. Rather an absent or excess overbite would be a malocclusion. Normal overbite is between 3â5 mm (or approximately 20â30% of the height of the mandibular incisors) and is commonly expressed as a percentage.