November 21st, 2020 
While in the park you encounter identical twin sisters who indicate they are in their late seventies. One twin is very energetic and the other twin is more reserved and introverted.
You mention that you are a psychologist studying generations and behavior. They ask you questions related to aging. As you address the questions please
compare and contrast the components of the biological theories of aging.
Discussion posts should be at least 300 words
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