palomaresmitchelle
12.07.2019 •
Biology
Why are scientific theories modified, but seldom discarded? explain
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Ответ:
Hello.
The original theories are based on a certain amount of truth. Now a days, theories are not accepted until there is a significant amount of evidence to back it up. If there should be new evidence that states otherwise, then the theory will be modified. The reason that it is called a theory, is because it can't be proven yet. This means that it might still become accepted some day, but until that time, pieces of the theoretical puzzle will have to be put together gradually (modified) as new information comes in and knowledge is gained.
Have a nice day
Ответ:
A) It is composed of a network of moist passageways that permit air to flow from the external environment to the lungs.
Explanation: