What is the final step of the following process: - Coal is loaded into the firebox - 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'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's wheels and power the train along
----
Answer: An outlet valve opens and the piston pushes the steam back through the cylinder and out up the locomotive's chimney

Q: What is the final step of the following process: - Air goes into the lungs - The lungs remove oxygen from the air - Oxygen diffuses from alveoli in the lungs to the bloodstream - Hemoglobin in red blood cells attaches to the oxygen - Red blood cells carry oxygen all around the body
A: Oxygen diffuses into cells from capillaries.

Question: What is the final step of the following process: - The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow - Your tongue helps out, pushing the food around while you chew with your teeth - The esophagus moves food from the back of your throat to your stomach - Strong muscles in the walls of the stomach and gastric juices break down food in your stomach
Answer: Your stomach moves the food into the intestines to complete digestion

[Q]: What is the final step of the following process: - Light energy is absorbed by chlorophyll in a plant - The light energy is used to convert carbon dioxide - The plant uses nutrients in the soil - The plant uses carbon dioxide in the air to produce glucose - The plant uses the glucose to give itself energy
****
[A]: Oxygen is released as a by product.

input: Please answer the following: What is the final step of the following process: - Sunlight strikes the chlorophyll molecules in the plant - Is trapped - Plant also takes in water and carbon dioxide from the environment - The plant forms glucose
++++++++++
output: The plant releases oxygen into the atmosphere.

What is the final step of the following process: - People dig up coal from the ground - People burn coal for heat or electricity - Pollution from the coal goes into the sky - Coal pollution enters clouds - Clouds rain over an area
----
Answer:
The polluted rain becomes acid rain.