An e-reader, also called an e-book reader or e-book device, is a mobile electronic device that is designed primarily for the purpose of reading e-books and digital periodicals. An e-reader is similar in form, but more limited in purpose than a tablet.-book reading is increasing in the US; by 2014 28% of adults had read an e-book, compared to 23% in 2013.
Fields relating to the environment: 1  Aerobiology (pronunciation) â The study of airborne organic particles.  Astrobiology (pronunciation) â The branch of biology concerned with the effects of outer space on living organisms and with the search for extraterrestrial life.
Today, we only use this system to classify living things. (Linnaeus included nonliving things in his mineral kingdom.) Also, we have added a few additional levels in the hierarchy. The broadest level of life is now a domain.All living things fit into only three domains: Archaea, Bacteria, and Eukarya. Swedish naturalist named Carolus Linnaeus is considered the 'Father of Taxonomy' because, in the 1700s, he developed a way to name and organize species that we still use today. His two most important contributions to taxonomy were: 1  A hierarchical classification system.