PLEASE HELP! The processes of plate tectonics occur at different scales of time and space. List some different terms that are used to describe distance and time at vastly different scales. (help is appreciated +)

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the answer to your question is c.

if you read the house of usher you should know that the house was haunted

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.