October 20, 2007. Doujinshi manga (often shortened to doujin) are non-professional and/or self published comics. Doujinshi manga can be broken into two broad categories: fan-comics and original works. Fan-comics, much like fan-fiction, are based on established properties and created by fans of those properties. Original works are based on the doujinshi-ka's (creator) original ideas.
What is Purchasing Power Parity (PPP)? Why is it important? Purchasing power parity (PPP) is an economic term that calculates the relative value of different currencies.
Biodiversity is important because certain organisms have economic value (such as rainforest plants being made into medicine), they have value to the ecosystem (think of their spot on a food web), and they are a source of natural beauty and recreation.iodiversity is important because humans d â¦ epend on animals and other species to live and grow and much as animals and other species depend on humans to live and grow. It's important because it is based on the evolution of other species. + 35 others found this useful.