Final answer:
President Joe Biden's presidency is different because he is the oldest person to serve as president, has a lot of political experience, and is bringing about significant change.
Step-by-step explanation:
President Joe Biden's presidency differs from others in several ways. Firstly, he is the oldest person to serve as president, taking office at the age of 78. Secondly, he has a long history of political experience, having served as Vice President under President Barack Obama. Lastly, Biden's presidency is notable for being a time of significant political and social change, including his focus on combating climate change and addressing racial equality.
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