Identify the series of geologic processes that can transform sandstone into quartzite, quartzite into magma, and magma into rhyolite.
A Compacting and cementing; heat and
pressure; melting
(B) Cooling; melting; heat and pressure
Heat & Pressure
Melting
Melting; heat and pressure; cooling
D Heat and pressure; melting; cooling
Cooling
Weathering & Erosion
Compacting & Cementing

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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