input question: What is the missing first step of the following process: - Ocean water pulls sand off of beaches - Ocean water breaks rocks off of cliffs - Ocean water carries sand and rocks into the ocean - Sand and rocks go to other land or the bottom of the ocean.???
output answer: Ocean waves hit land

What is the missing first step of the following process: - The air travels into the windpipe - The windpipe divides the air to the two lungs via the bronchial tubes - The lungs oxygenate the blood in the body - Carbon dioxide is filtered out by every cell in the body - The carbon dioxide is carried back to the lungs via the bloodstream - The carbon dioxide is exhaled.
----
Answer: Air is taken into the body via the nose or mouth

Q: What is the missing first step of the following process: - Preheat the oven to desired baking temperature - Grease your preferred cake pan with crisco or butter or other non-stick spray - Add eggs and vegetable oil to the dry ingredients - Stir or whisk until all the dry flour has been absorbed - Pour the batter into the greased cake pan - Place cake pan into the oven for the required time - When a toothpick inserted into the cake comes out clean, the cake is done baking -
A: To bake a cake you first need to gather your ingredients

Question: What is the missing first step of the following process: - Green house gases enter from the earth - Heat is trapped in atmosphere - Different things on earth are hotter - The overall planet is hotter.
Answer: Suns heat enters atmosphere

[Q]: What is the missing first step of the following process: - Water droplets are in clouds - The air gets cold - Water droplets turn into ice crystals - Ice crystals in clouds stick together and become snowflakes.
****
[A]: Water evaporates from the ground up to the sky

Problem: Given the question: What is the missing first step of the following process: - These substances rise into the high atmosphere - They react with water and oxygen - This creates a more acidic rain - The rain with the high acid content falls.
++++++++++++++++++++++++++++++++
The answer is:
Chemicals like sulfur dioxide and nitrogen are released into the air