There are two jars a and b containing food materials. food in jar 'a' is picked with acetic acid while 'b' is not. food of which jar will stale first? explain.

acetic acid is one of popular food preservative so jar A food will not stale as quickly compared to jar B

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

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