input: Please answer the following: - A man and woman mate - Embryo is C - Embryo grows and develops into a fetus inside the woman's womb - The fetus is born - Begins to grow and develop through infancy and childhood - In the teenage years the human experiences puberty - Reaches sexual maturity - At 18 the human becomes an adult What might be the last step of the process?
++++++++++
output: Adult may procreate continuing the cycle.

input: Please answer the following: - There is a fetus in the womb - They are born and are a baby - The baby grows into a child - Puberty turns the child into an adolescent - The adolescent becomes an adult - An adult becomes an elderly person What might be the last step of the process?
++++++++++
output: The elderly person dies.

input: Please answer the following: - Solution caves are formed in limestone and similar rocks by the action of water - After a rain, water seeps into cracks and pores of soil and rock - The water percolates beneath the land surface - Some of the water reaches a zone where all the cracks and pores in the rock are already filled with water - Rainwater absorbs some carbon dioxide as it passes through the atmosphere and even more as it drains through soil and decaying vegetation - The water combines chemically with the carbon dioxide - A weak carbonic acid solution is formed What might be the last step of the process?
++++++++++
output: This acid slowly dissolves calcite, forms solution cavities, and excavates passageways

input: Please answer the following: - A bird hatches from an egg - The bird is nurtured by its parents - And is fed food for growth - The bird grows - Begins to learn how to fly - The bird matures - The bird leaves its nest What might be the last step of the process?
++++++++++
output:
The bird makes its own nest.