Volcano of classifying magmatic volcanoes is by their frequency of eruption, with those that erupt regularly called active, those that have erupted in historical times but are now quiet called dormant or inactive, and those that have not erupted in historical times called extinct. However, these popular classifications—extinct in particular—are practically meaningless to scientists. They use classifications which refer to a particular volcano's formative and eruptive processes and resulting shapes. There is no consensus among volcanologists on how to define an "active" volcano. The lifespan of a volcano can vary from months to several million years, making such a distinction sometimes
National parks and nature reserves of Israel which was the first declared nature reserve in Israel. In 1963 the Knesset approved the "National parks and nature reserves act" (חוק הגנים הלאומיים ושמורות הטבע), whose legislation process had already began in 1956. As a result, two authorities were established: the National Parks Authority and the Nature Reserves Authority. In 1998 the two authorities were merged into one body - Israel Nature and Parks Authority. The last observation of an Arabian leopard took place in the northern Arabah area in 2010/11. It is possibly extinct in the country. In Israel the distinction between national parks and nature reserves is