Problem: What is the missing first step of the following process:  -  The heated water evaporates - The salt is left behind - The evaporated water condenses on a cold surface - The evaporated water is collected - The process is repeated - More salt is removed from the water.

A: Water is heated

Problem: Given the question: What is the missing first step of the following process:  -  The wind and water pick up sediment that came off the rocks - Sediment is carried to an area by the wind, water, air, or ice - Sediment is deposited on the same spot many times - The sediment piles on top of other sediment for a long time - The sediment near the bottom is compressed by the weight of newer sediment - The sediment becomes sedimentary rock as it is pushed together by the heavy weight -
++++++++++++++++++++++++++++++++
The answer is:
Wind and water erode rocks

input question: What is the missing first step of the following process:  -  The blood travels into the neophrons - Waste is expelled via the neophrons - The waste goes to the bladder in the form of urine - The clean blood exits the kidneys.???
output answer: Blood enters the kidney

What is the missing first step of the following process:  -  Your stomach digests the food - Sugars from food enter your bloodstream - Insulin helps turn sugars into energy - Insulin helps your body store the energy in fat, muscle and liver cells -
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Answer: You eat food

Q: What is the missing first step of the following process:  -  The trees die off - The dead material provides nutrients for more trees - The rising trees provide shelter - And more organisms begin to thrive - The ecosystem known as a forest is made.
A: Networks of trees start forming

[Q]: What is the missing first step of the following process:  -  Release them into the air by process of sporulation - Spores are carried by the wind - Land in a hospitable growing environment - The spores germinate into the soil - The mushroom starts growing - The adult mushroom produce spores of its own to repeat the process.
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[A]:
Adult mushrooms produce spores