What does the passage imply about movie producers?

Why is macbeth both excited and fearful after hearing the witches prediction about his future

The voussoirs rest on the centering until the keystone is wedged into place. at that point, the centering can be dismantled. what does the word dismantled mean? a. to take apart b. to put together c. to cover d. to lift up

In a data source, such as a spreadsheet, why is it important that top row be the header?