The chemistry leading to life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10â17 million years old. Though life is confirmed only on the Earth, many think that extraterrestrial life is not only plausible, but probable or inevitable.he chemistry leading to life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10â17 million years old. Though life is confirmed only on the Earth, many think that extraterrestrial life is not only plausible, but probable or inevitable.
Anatomy is the field of science concerned with the study of the physical structures of an organisms. It's divided into several branches, including histology, embryology, gross anatomy, zootomy, phytotomy, human anatomy, and comparative anatomy.
Different types of anatomy. 1  Gross anatomy involves anything that could be seen with your unaided eye. 2  Surface anatomy is a subset of gross anatomy that is anything that can be revealed on the skin. 3  Microscopic anatomy is known as histology which is the study of tissues. 4  Histo=web or tissue and-logy=Study of. 5  Developmental anatomy is the 6  ... Embryol