world of human evolution

Introduction - The human eye uses light and enables us to see objects around u..

The eye lens converges these light rays to form a real, inverted and diminished image on the retina. The light sensitive cells of the retina gets activated with the incidence of light and generate electric signal..

- Accommodation of the Eye The process by which the ciliary muscles change the focal length of an eye lens to focus distant or near objects clearly on the retina is called the accommodation of the eye. Power of Accommodation The ability of the eye to focus objects lying at different distances is ca..

Human evolution concerns itself with the emergence of humans as a distinct species. Undoubtedly, there are special features possessed by 'Homo sapiens' considered to be at the top of the evolutionary ladder but science has become fully committed to finding purely bio..

Question 1 - Question: Name any two defects of eye? Answer: Myopia and hypermetropia are the most common defects of ey..

..

. Organisms with hard parts - shells, carapaces and skeletons appeared. The first fish and the first vertebrates appeared; plants, previously restricted to the oceans, began the colonization of the land; the first insect evolved, and its descendants became the pioneers in the colonization of the la..

Era 1: The Beginnings of Human Society Era 2: Early Civilizations and the Emergence of Pastoral Peoples, 4000-1000 BCE Era 3: Classical Traditions, Major Religions, and Giant Empires, 1000 BCE -300 BCE Era 4: Expanding Zones of Exchange and Encounter, 300-1000 CE Era 5: Intensified ..

Era 1: The Beginnings of Human Society Era 2: Early Civilizations and the Emergence of Pastoral Peoples, 4000-1000 BCE Era 3: Classical Traditions, Major Religions, and Giant Empires, 1000 BCE -300 BCE Era 4: Expanding Zones of Exchange and Encounter, 300-1000 CE Era 5: Intensified ..

Era 1: The Beginnings of Human Society Era 2: Early Civilizations and the Emergence of Pastoral Peoples, 4000-1000 BCE Era 3: Classical Traditions, Major Religions, and Giant Empires, 1000 BCE -300 BCE Era 4: Expanding Zones of Exchange and Encounter, 300-1000 CE Era 5: Intensified ..