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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.
What are the two main types of endocytosis? Endocytosis can be divided as pinocytosis or phagocytosis. In pinocytosis small particles on the external surface of the membrane ex
what does the future look like with trash in the ocean?
You are working with plants that have either hairy (dominant) or 'bald' (recessive) flowers. Hairy flowers have little hairs on them that make the flowers look fuzzy, bald flowers
Describe the concept of gastrulation? During embryological development this stage results in blastulas conversion into a gastrula. Cells migrate toward the inside of embryo fro
1. Road traffic: of all the sources of noise pollution, road traffic is the most prevalent and perhaps the most damaging source of pollution. More people are exposed to noise
Acute and Chronic Tonsilitis: Tonsilitis refers to the inflammation of tonsils and lymphatic tissue that are located on each side of oropharynx. Acute infection of tonsils
explain satellite chromosomes
why phloem made of living cells
Atmosphere is a multilayer blanket of various gases such as N2 (78.80%), O2 (20.95%), Ar(0.93%), CO2 (0.03%), water vapor and some other gases. This envelope extends from earth's c
A large number of important drugs are derived from plants. For example Tubocuranin, derived from plant-based curare, is used as a muscle relaxant during surgery. Curianol, a Guy
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