The number of people per square mile is the population density
Many observations provide a history that one may be able to surmise theories from.
The Spanish Habsburg dynasty
Answer:
Human activities may affect the physical environment, and the physical environment may affect human activities.
Explanation:
Geography is everything to human activities. The Fertile Crescent is incredibly important for the start of civilizations. Humans also affect the environment, like deforestation and mining.
It's not a story the Jedi would tell you. It's a Sith legend. Darth Plagueis was a Dark Lord of the Sith, so powerful and so wise he could use the Force to influence the midichlorians to create life… He had such a knowledge of the dark side that he could even keep the ones he cared about from dying