In February 2014, the Sinabung volcano began to erupt on the island of Sumatra. This volcano belongs to active volcanoes. Before this, his eruptions occurred in 2012 and 2013. Volcanic ash was raised to a height of more than 4 kilometers, lava swallowed several villages. As a result of the eruption, several people died, more than 20 thousand people were evacuated to safe places.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.