Such volcanoes are devastating, but very rare. The last one happened at Toba in Sumatra, Indonesia, 74,000 years ago. The active volcanic system at Yellowstone National Park has resulted in super-eruptions-the most recent happened 640,000 years ago. Yellowstone's volcanism is powered by magma rising from a hotspot.
A biased opinion is based on a preconceived notion or idea about a thing, person or group of people based on personal beliefs. In psychology, a bias is known as a cognitive shortcut.. It is based on the idea that the human brain, in order to conserve energy, naturally looks for shorter paths to conclusions by using what has been ingrained to draw speedy conclusions.
bias meaning, bias definition | English Cobuild dictionary. Search also in: Web News Encyclopedia Images. bias. ( biases plural & 3rd person present) ( biasing present participle) ( biased past tense & past participle ) 1 n-var Bias is a tendency to prefer one person or thing to another, and to favour that person or thing. Bias against women permeates every level of the judicial system..., There were fierce attacks on the BBC for alleged political bias. 2 n-var Bias is a concern with or interest in one thing more than others.