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Carbon l4 with a half-life of 5,568 years is used to date a sample of wood. Sample has l/8 the carbon l4 contained in a living tree of same species. Approximately how old is specimen?
ANSWER: l6, 704 YEARS
Nutrient groups and their functions: We should know that our body is made up of different chemical substances which are related to the food we take. Scientists have determine
THEORIES OF ANTHROPOLOGY
The Fume Cupboard : If a reaction uses or produces harmful gases, dusts or vapours, it poses a risk of inhalation. Such reactions should be carried out not on an open bench but in
how does the heart work?
Transport: River Valley civilisations were characterised by settlements along the rivers and growth of cities which needed, among.other things, stones and wood from distant
application of remote sensing in land slides and flood control
Folic acid has the following important physico-chemical properties: a) It is a yellow, spear-shaped crystalline substance. b) The compound is sparingly soluble in water.
Amphoteric : Amino acids having the characteristics of an acid and a base.
what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?
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