The epidermis: a thin outer portion, that is the keratinised stratified squamous epithelium of skin. The epidermis is important for the protective function of skin. The basal layers of this epithelium are folded to form dermal papillae. Thin skin contains four types of cellular layers, and thick skin contains five.
A Geocentric theory is an astronomical theory which describes the universe as a Geocentric system, i.e., a system which puts the Earth in the center of the universe, and describes other objects from the point of view of the Earth. Geocentric theory is an astronomical theory which describes the universe as a Geocentric system, i.e., a system which puts the Earth in the center of the universe, and describes other objects from the point of view of the Earth.
Quick Answer. Heliocentric theory is a model of the solar system that posits a central place for the Sun, with the planets orbiting it. It is most closely associated with the 16th-century work of Copernicus and the 17th-century work of Galileo, and the theory was widely adopted after Copernicus' death.