However, there is no consensus among volcanologists on how to define an active volcano. As of 2012, PHIVOLCS lists 23 volcanoes as active in the Philippines, 21 of which have historical eruptions; one, Cabalian, which is strongly fumarolic volcano [further explanation needed]; and one, Leonard Kniaseff, which was active 1,800 years ago (C14).
Polyvinyl Chloride PVC. Polyvinyl Chloride (PVC) is a major plastics material which finds widespread use in building, transport, packaging, electrical/electronic and healthcare applications.
How to Recycle PVC (Plastic #3) An Overview on Recycling Plastic #3. Polyvinyl chloride or PVC plastics are everywhere, and youâre not likely to be happy about how they can harm your health and the planet. Given their widespread use and relative toxicity, they are often termed the âpoison plasticâ in the world of plastic products.