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.
1 Developmental biology â The study of the processes by which an organism changes from a single cell into a mature, multicellular individual.  Epigenetics (pronunciation) â The study of heritable changes in phenotype caused by mechanisms other than the alteration of nucleotide sequences.
The 3 branches of Science are: Life, Physical, and Earth.   Branches of Physical Science include :   physics, mechanics, kinetics, electromagnetics, chemistry, etc.  â¦  Branches of Life Science include:   biology, botan, zoology, etc.iology the study of all living organisms Paleontology the study of fossil remians of plants and animals Physics the study o f forms of energy, matter and motion Conservation the study of natural resources which focuses on their wise and careful use.