[Q]: What is the missing first step of the following process:  -  The parent(s) incubate the eggs - The eggs hatch - The mother (and sometimes the father) bird take care of the baby birds - The baby birds grow up and get their flight feathers - The young birds learn to fly and leave the nest - The adult birds find mates and mate.
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[A]: A bird lays eggs in a nest


[Q]: What is the missing first step of the following process:  -  The matter forms on the sea floor - Layers of sediment form above the matter compressing it - After many years the matter is compressed and heated - The result is that crude oil forms.
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[A]: Living organisms in the sea die


[Q]: 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 -
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[A]: Wind and water erode rocks


[Q]: What is the missing first step of the following process:  -  Bees will begin to chew max until it becomes softened - The chewed up wax will be stored inside of a honeycomb - Worker bees continue chewing and softening wax from within - The chewed up wax is steadily added, making the hive bigger and bigger - The bees will house nectar, honey and pollen within the honeycomb's cells -
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[A]: