I would say D the Billingsella Corrugata, it IS in the oldest recorded time line, so by theory, it's the oldest (Don't quote me on that, I'm not %100)
Clay can be found everywhere in the world
The urban middle class is the correct answer :) I hope this help, have a lovely day.
Answer:
old crust is recycled by subduction
Explanation:
Answer:
river bifurication. or when it splits into smaller streams.
Explanation:
