Question

using explosives to demolish a building doesnt mean blowing it up. rather, the explosives cause the building to collapse. like choreographers creating a ballet, engineers plan in what order columns and walls will be knocked out. the charges dont go off at once in a huge blast. instead, they detonate one after another, so each part of the building collapses in the right order. all of this is controlled by wires and timers. fill in the blanks to explain how engineers use explosives to demolish a building. when engineers demolish a building, they first create a plan. it tells the order in which the blasts will occur. then, as each explosion happens, a different part of the building until the entire collapsed. falls down goes off blows up

Explanation:

Engineers create a plan for building demolition which details the blast - order. As blasts occur in sequence, parts of the building fall down until the whole building collapses.

Answer:

When engineers demolish a building, they first create a plan. It tells the order in which the blasts will occur. Then, as each explosion happens, a different part of the building falls down until the entire building is collapsed.