Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Fire and Cookery :
Fire and Cookery where and when fiie came to be used is not known. Fire, to start with, must have been a frightening thing, giving rise to many myths and legends. However, as man slowly learned to control it, he found it very useful to keep himself wann and to frighten away wild animals. It is easy to imagine that chance eating of burnt or charred flesh must have led to the idea of cooking, which then made even tough meat edible and tastier. Thus, it must havetremendously increased the number of things one could eat. It was, perhaps, from the use offire for cooking that fired clay pottery and melting of metals for making tools arose.
Boiling gave rise to certain difficulties. At first, water was heated by dropping hot stones into water in leather buckets. We find such itones, cracked by heating and chilling, around prehistoric sites. The crucial discovery, however, was that by coating a basket with thick clay it could be put on the fire. Eventually, towards the end of the Stone Age. it was -discovered that coated baskets crack while heating, whereas pots made of heat-treated clay do not crack. Fired pottery was, tlrerel'ore, a very significant discovery. l.'inally, as Lhc problem of storing liquids for long periods in clay pots was tackled, the slower chemical changes of fermentation could be noted and later used for brewing wine. From the use of dyes, paints and tanning as found in this epoch, we can infer that the use of rudimentary chemistry for transforking materials was also in progress in the later part of the Stone Age.
Explain the Maltose and Cellobiose? Maltose consists of two a-D-glucose molecules with the alpha bond at carbon 1 of one molecule attached to the oxygen at carbon 4 of the se
Categorisation of Major Brain Functions As a framework, the major brain functions typically divided into modalities and domains. The major modalities are motor function and th
Studying a single rock Select a single rock and try to learn as more as possible about it from careful observation. If it is flat, it is probably a piece or layer from Sediment
Is it possible for any son of a couple formed by a hemophilic man (XhY) and a nonhemophilic noncarrier (XX) woman to be hemophilic? If the mothers are not affected by the disea
The scientist who described cells as “many little boxes” was
Lack of iron in the photic zone of the ocean restricts the size of plankton population.Iron is what kind of factor for marine plankton?
Explain Procedure for Checking the Presence of Rhodamine B? Conduct the experiment following the procedure given herewith: 1. Pour liquid paraffin or mineral oil in a Petri
How many Layers in retina The retina is composed of ten layers: a:) Pigmented epithelium (outermost layer), b) Neusoepithelium, rods and cones (photoreceptors), c
Nursing Process Assessment History, precipitating factors, current medication, medication used to relieve asthma symptoms. Any recent changes in medication regimen.
Diagnostic Clues 1) When pallor, decrease in temperature, and numbness are the only complaints, viability of the limb usually not threatened. A condition of pain, pallor,
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd