How does studying rocks and shells of aquatic organisms help scientists understand the history of Earth's climate?

Rocks and shells can degrade in ways that show the weather, and the climate that was around them at that time. If you think about it, a rock that has layers of lines and colors, is a goldmine for scientists. Its nature's timeline.

the answer is "d"

(context) if you were to travel to the middle east and go into peoples homes there would be like 4 generations in there

(more context) i'm pretty sure in the middle east they take loyalty and family bonds very serious

(last bit of context) i'm also positive that extended families are most commonly found in urban areas