 छोमत становится स्यभीण कि सांटेट,олов क्यूँद मे tricked कि म्सानट़ा के है। अबस्रौस के कम से ऑचार्ट के � 1999 beiten अबस्वा�cek क्यूँचा,ईशिस,टि baskets उउउउउउउउउउउउउउउउउउउउउउउउउउउउउउउॉ OMG the first one defining our theory theory basically it is a tested it is a tested and accepted model that help to explain the predicted natural facts so basically if we look at it then what we are doing is to predict the natural facts there are two things in it in hypothesis we are discussing the issue of the RDA whereas in theory there are many facts and the relevant facts are also explained in theory so we write in its definition that it helps to explain and predict the natural facts so what is the solution of the RDA issues and what is the explanation of the relevant issues it is in theory so theory is basically a generalized term generalized in a sense it covers a very broad aspect of any issue whereas a common term is not in the control of theory because the vision of theory is exploring and explaining the natural facts so how is the design of theory, how is the formulation of theory as I said in the beginning theory is basically the third step in scientific methods so observations then hypothesis, hypothesis which will be rejected by many hypothesis which can be survived by a hypothesis which will be very explanatory and very good now hypothesis has to attain the form of theory but the requirement for that is that the hypothesis which the scientist has predicted not only the same scientist should not follow it but the hypothesis which many other scientists should do is to do experimental verification and to elaborate its nature so this is why it is said that a successful hypothesis has to be published when it will be published then in the world worldwide because the scientific journals when the data will be published then it will circulate in the world so different scientists who are working in that field will see this hypothesis critically if a hypothesis is correct after repeated experimentations then along with that there are other hypothesis which are supporting that hypothesis so then that hypothesis attain the shape of a theory so then we will take that hypothesis on the next stage that means it will be on the first stage of theory now the theory, if a hypothesis is attaining the form of theory then its basic requirement is criteria that what are the important characteristics of that theory or criteria of that theory is that first one the theory it should be observable if it is a theory then somehow its results are observed I get to know that this theory is explaining this and the results of experiments are also showing this repeatable, when a theory is presented to a scientist then it is necessary that we can repeatedly verify it which is something in science, science is to experimentally verify facts and figures so the experimentally verified facts this is the basic definition of theory that it should be repeatable that if a theory is presented to a scientist then other scientists can repeat it yes this is the correct theory third characteristic is that it should be predictive explanatory that means theory discusses a specific issue but along with that it explains other relevant issues so let us consider that many issues that are coming in the future are already being explained that is having explanatory vision if we look at the examples of theory in terms of physics and chemistry if we look at the theories in biology then we get less and less theories the reason is that the life in biology is very versatile so in fact they mean that you cannot do a rule anywhere you always get a variation in between let me talk about fish in fish we all know that there are gills but if you take lung fish in lung fish there are lungs so if you keep this criteria in fish that if all fishes have gills then lung fish will go away this is the reason that there are very few theories in biology some theories are very famous like the theory of evolution Darwin's theory we have it we read it too