Choose a landmark that was built in the last 250 years, such as mount rushmore, the eiffel tower, or the statue of liberty. how does this landmark represent our civilization? just as we study the ruins and landmarks of ancient agrarian societies, what might the people of the future learn from our landmarks?

Past is key to future and landmarks are ket sign and indicators.

Explanation:

Many landmarks have been built in the history of the earth such as the Mount Rushmore, Eiffel Tower, Statue of Liberty and many more the Burj Khalifa, and Berlin wall.  Their basic construct was to put represent civilization like it's in Brazil statue of christ redeemer is know for peace and landmark of Stonehenge on easter island. It depicts a civilization's history and past experiences. landmarks as a way of identifying the place with some characteristics that the place has to offer to the future generation so as they can understand and learn from them. They are marked on the history of the earth's surface.  Some are known for sacrifice, some for rituals, some for freedom and others to represent the amount of power or dominance.

Ba population changes in response to a change in environment

Answerland;