[Q]: What is the missing first step of the following process:  -  A large amount of rain occurs - The water builds up behind the dam - The dam opens its floodgates when it starts to get full - The water flows into a river below the dam - The dam closes its gates - The dam will occasionally open its gates again to gradually release more water - Eventually all of the floodwater will be slowly released into the river without causing any flood damage.
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[A]: A dam is built in an area prone to flooding


[Q]: What is the missing first step of the following process:  -  A larvae matures inside of the egg - The caterpillar hatches from the egg - The caterpillar eats and grows - The caterpillar spins a coccoon around itself and forms into a pupa - The butterfly forms inside of the coccoon - The mature butterfly emerges from the coccoon - The butterfly mates - The female butterfly lays eggs.
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[A]: A butterfly lays an egg


[Q]: What is the missing first step of the following process:  -  Bloodstream - The pancreas - Insulin lower sugar levels - Bloo sugar goes back to normal.
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[A]: Sugar enters the body


[Q]: What is the missing first step of the following process:  -  ITS LAID ON A LEAF OR PLANT - THE EGG HATCHES - THE LARVA COMES OUT(CATERPILLAR) - IT BEGINS TO EAT ON THE LEAF THAT IS WAS BORN ON - CONTINUES TO EAT TO GROW QUICKLY - AFTER ITS GROWN TO FULL LENGHT IT FORMS INTO A PUPA - UNDERGOES METAMORPHOSIS TO BECOME BUTTERFLY - AFTER HE BUTTERFLY IS FOMED IT PUMPS BLOOD INTO ITS WINGS TO GAIN STRENGHT TO BE ABLE TO FLY - TH EBUTTERLFY IS FIANLLY ABLE TO FLY AWAY.
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[A]: