What is the purpose of composition used in a
photograph, or in a scene in a movie?

Shot composition is more than arranging scene elements in a camera frame. It is an art that combines those elements to advance the story, reveal character, and create emotion. Knowing the rules of shot composition and using them well can keep your audience engaged from beginning to end.

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The demand curve for steel to shift to the right

Explanation:

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Substitutes goods are goods that can be used in place of one another. If the price of plastic increases, consumers shift to steel, its demand increases and the supply curve shifts to the right.

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