What is the missing first step of the following process:  -  The boiler produces steam under high pressure - The steam generated in the boiler flows down into a cylinder - Just ahead of the wheels, pushing a tight-fitting plunger, the piston - The piston is connected to one or more of the locomotive&#x27;s wheels through a kind of arm-elbow-shoulder joint called a crank and connecting rod - As the piston pushes, the crank and connecting rod turn the locomotive&#x27;s wheels and power the train along - An outlet valve opens and the piston pushes the steam back through the cylinder and out up the locomotive&#x27;s chimney -
Ans: Coal is loaded into the firebox

What is the missing first step of the following process:  -  Bees gather nectar from flowers - The bees evaporate the nectar by passing it back and forth to each other - The evaporation turns the nectar into sugary honey - The bees chew the honey until it turns into moldable wax - The bees mold the wax into hexagonal (six sided) cylinders - Thousands of these hexagonal cylinders put together form the hive -
Ans: Bees find a place for the hive, such as a rock crevice or tree branch

What is the missing first step of the following process:  -  The energy causes the fault lines give way - The earth&#x27;s plates move - The energy radiates outward from the fault in all directions - The seismic waves shake the earth as they move through it.
Ans: Energy builds up in the crust of the earth

What is the missing first step of the following process:  -  The bat makes sounds with their mouth or nose - The sound waves travel away from the bat - The sound waves hit objects - The sound waves bounce off the objects back towards the bat - The bat hears the sound waves echoing off the objects - The bat knows where the objects are because of where the sound echoed from - The bat doesn't hurt itself by hitting the objects.

Ans: Bats fly through an area