Problem: What is the missing first step of the following process: - Nephrons in the kidney filter the blood - The waste that is filtered out mixes with water - Become urine - Ureters carry urine out of the kidneys.

A: Blood carried into kidney by the renal artery

Problem: Given the question: What is the missing first step of the following process: - Under the right conditions it can develop further and start to spin around a low-pressure center - If it develops it's classified as a 'tropical cyclone' or 'tropical depression' - If the system strengthens and wind speeds rise past 39 mph, the system is dubbed a 'tropical storm' - If the pressure in the center drops even further and the winds really pick up and forms a clearly defined 'eye' it's a hurricane -
++++++++++++++++++++++++++++++++
The answer is:
A hurricane usually starts as an organized thunderstorm activity that stretches at least 100 miles across and maintains its identity for more than 24 hours

input question: What is the missing first step of the following process: - The water will turn into water vapor - Collect the water vapor - Allow the water vapor to cool - The water vapor will turn into liquid water - The salt will be separated from the water.???
output answer: Boil salt water

What is the missing first step of the following process: - Rain picks up carbon dioxide as it falls to earth - The rain falls on the soil over the limestone - The carbon dioxide in the rain washes through the soil - The carbon dioxide turns into acid - The acid in the rain gets to the limestone below the soil - The acid dissolves the limestone - Acid continues to erode the limestone with more rain over time - The eroded limestone sometimes forms caves.
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Answer: Limestone is located under the soil

Q: What is the missing first step of the following process: - A baby bird forms within the egg if it is fertilized - The baby bird begins pecking out of the egg - The baby bird is unable to fly to get food - The mother bird must feed the baby bird food - The bird grows stronger and grows wings - The bird is able to fly - The bird is able to leave the nest and find food - The bird is able to reproduce.
A: An egg is laid by a mother bird

[Q]: What is the missing first step of the following process: - Egg is produced after fertilziation - Mother sits on egg until it hatches - Bird Hatches - Grows up - Flee the next - Starts family - Dies.
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[A]:
Two birds meet each other