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Nutreints are the basic requirements of the person but how much one should consume it is decided by the organizations which work under the government. These organizations make study over the person taking each and every situation, to find out how much a person take minerals and vitamin on daily basis. This is called RDA( Recommend Daily Allowances) which is decided by the ESPEN,  FSSAI and ICMR.  

It is a European Society of Parentreal and Entreal Nutrition. This organization provide and make the guidlines of consumption of vitamins, minerals  and proteins to the patients. 
The aim of this organization to provide basic information to the patient about their RDA. 

It is a Food Safety and Security Authority of India which gives the guidlines of consumption of vitamins,  minerals and proteins to the healthy person. 

It is a Indian Council Of Medical Research which gives the guidlines fir the consumption of vitamins , minerals and proteins to the nutrient deficent person. 

For the RDA limit given by the FSSAI and ICMR see the post on this blog ''RDA limit as per FSSAI and ICMR''
The human stomach related framework is an intricate arrangement of organs and organs that procedures nourishment. So as to utilize the nourishment we eat, our body needs to separate the sustenance into littler atoms that it can process; it likewise needs to discharge squander. 

The greater part of the stomach related organs (like the stomach and digestive organs) are tube-like and contain the sustenance as it advances through the body. The stomach related framework is basically a long, contorting tube that keeps running from the mouth to the butt, in addition to a couple of different organs (like the liver and pancreas) that create or store stomach related chemicals. 

The beginning of the procedure - the mouth: 
The stomach related process starts in the mouth. Sustenance is mostly separated by the way toward biting and by the substance activity of salivary compounds (these chemicals are created by the salivary organs and separate starches into littler particles). 

While in transit to the stomach: the throat - In the wake of being bitten and gulped, the sustenance enters the throat. The throat is a long tube that keeps running from the mouth to the stomach. It utilizes musical, wave-like muscle developments (called peristalsis) to constrain nourishment from the throat into the stomach. This muscle development enables us to eat or drink notwithstanding when we're topsy turvy. 

In the stomach - The stomach is a substantial, sack-like organ that agitates the sustenance and showers it in an exceptionally solid corrosive (gastric corrosive). Nourishment in the stomach that is mostly processed and blended with stomach acids is called chyme. 

In the small digestive system - In the wake of being in the stomach, sustenance enters the duodenum, the initial segment of the small digestive tract. It at that point enters the jejunum and afterward the ileum (the last piece of the small digestive system). In the small digestive system, bile (delivered in the liver and put away in the rankle bladder), pancreatic chemicals, and other stomach related catalysts created by the internal mass of the small digestive system help in the breakdown of sustenance. 

In the digestive organ - Subsequent to going through the small digestive system, sustenance goes into the internal organ. In the digestive organ, a portion of the water and electrolytes (chemicals like sodium) are expelled from the sustenance. Numerous microorganisms (microscopic organisms like Bacteroides, Lactobacillus acidophilus, Escherichia coli, and Klebsiella) in the internal organ help in the absorption procedure. The initial segment of the digestive organ is known as the cecum (the supplement is associated with the cecum). Nourishment at that point ventures upward in the climbing colon. The nourishment traversed the guts in the transverse colon, backpedals down the opposite side of the body in the sliding colon, and after that through the sigmoid colon. 

The finish of the procedure - Strong waste is then put away in the rectum until the point that it is discharged by means of the anus. 

Before the origin of life on earth 🌍 the word science was originated because our 🏫 science starts from there. After the origin of species and life forms on earth science was developed and still evolving. 
Then the era comes when higher species were evolved which have some capabilities to understand that natural phenomenon and processes occuring in the environment. Spontaneously the species move to higher level of evolution, and today we are able to understand these phenomenon , explain them with theories, predict them and more. 
But the actual meaning of science is same in past and in future, '' Science is to analyze everything in your environment with a meaningful explanation ''.
This is we are doing since ancient  times,  our ancestors studied and analyzed them and stored in written form of explanation which today we take as examples. For example : VEDAS in Hindu religion which have lot of information about science(Medical Science)  based on the actual experimentation, Egyptian and Roman architectures  and many more. 
The previous civilizations which are lost they are very developed in science they created various large monument which modern tech can't do perfectly.
The modern science is totally based on the previous science explorations although we have created lot of technology which reduces our time and labour consumption but these tech doesn't have perfection like in ancient science. 
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