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.
Terms like âbiologyâ and âzoologyâ are general terms that refer to the scientific study of living organisms and their environments. There are many subfields of biology that study a specific section of the living world or a specific group of organisms. Most biologists develop expertise in one of these subfields.iologists study living organisms and research how they interact and relate to the environment. Colleges and universities, government agencies, pharmaceutical companies, conservation groups, science museums, and many other sites hire biologists.