Palaeolithic Types: Palaeolithic period has been mainly divided into Lower, Middle and Upper on the basis of certain predominant types. (i) Chopper: These are core tools prepared by unifacial flaking of the terminal end. In some rare cases the flaking might extend over one of the surfaces but do not include the butt-end which is as […]
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I & II Prehistoric and Protohistoric tools- Technique
1. Primary fabrication techniques a. Uncontrolled flacking i. Direct percussion ii. Block on block technique b. Controlled flacking i. Step or resolved flacking ii. Cylinder hammer or hollow hammer technique iii. Punching technique iv. Pressure flacking 2. Compound technique a. Clactonian b. Levallois technique c. Fluting – microlithic technique 3. Polishing and grinding – Neolithic […]
Read MoreI.9.6.2 Physiological characteristics- pulse rate in different cultural and socio-economic groups.
Pulse rate also known as heart rate is a measure of the variation in time between each heartbeat. This variation is controlled by a primitive part of the nervous system called the autonomic nervous system (ANS). It works regardless of our desire and regulates, among other things, our heart rate, blood pressure, breathing, and digestion. […]
Read MoreI.6 Difference between Cultural Evolution and Cultural Diffusion.
Cultural evolution Cultural diffusion Definition : It is a process of social and cultural change in a definite direction from simple to complex, homogeneity to heterogeneity. Definition : It is a process where cultural elements, complexes and aspects pass from one group to another. Nature : Cultural Evolution is more complicated in nature as compared […]
Read MoreI.9.5 Race crossing in man
Definition : Race crossing is interbreeding between two different human races. Different human races separated geographically have acquired race specific traits which were stylized through natural selection. Interbreeding/ crossing between races would result in admixture of these traits. Examples : Arabic and Semitic traders have penetrated through Africa. Asiatic traders have passed on and into […]
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