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Homo sapiens first appeared in the fossil record between 200,000 to 300,000 years ago, The fossils were the Swanscomb man from England and Steinheim man from Germany.
a) The Swanscomb skull, b) The Steinheim skull There are only slight physical differences between Homo erectus an9 Homo sopiens and the transition between the two species is obvious from the earliest known groups of Homo sapiens, the Neanderthal man. For this reason some authorities prefer to place Neanderthal man under H. erectus. Whereas H. sapiem is characterised by Large and round brain case, smaller brow ridges and a more pronounced chin as compared to pithecanthropines, Neanderthalers were more or less intermediate.
Illustrates the vitreous expansion and contraction in the physio-chemical property? Vitreous Expansion and Contraction The positive charge in Na ions, NaCl molecule and
Q. Is pollution always caused by humans? In the most cases pollution is caused by human activity. Other species and some abiotic factors though can also pollute an ecosystem. F
Classification of Minerals Minerals can be separated into two main categories, namely, main elements (calcium, potassium, phosphorous, chlorine, sodium, magnesium) and trace el
Osmoregulation in Marine Non-Chordate Metazoans Studies on the osmotic pressure of body fluids of marine organisms have displayed that their internal osmotic pressure is more
Question 1 Discuss how would you perform antiglobulin test? Add a note on it clinical importance. What are the precautions to be taken while performing the test? Question 2 E
How many cells are in the human body? According to "The Handy Science Answer Book" noted by the Science and Technology Department of the Carnegie Library of Pittsburgh (1994) th
Explain the Phases of swallowing process in Dysphagia? i) Oral Phase: In this, food is placed in the mouth, mixed with saliva, chewed if required and formed into a bolus by t
Classification of plants and animals
Define Water as a temperature regulator? Water plays an important role in the distribution of heat throughout the body and the regulation of body temperature. Heat is generate
In general compare and contrast the three functional classifications of joints according to movement. What are two characteristics that make synovial joints unique and different fr
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