I think the answer is B: sediments melt deep beneath the Earth's surface.
The population started rising through the 1990s and into the new century thanks to the young migrant population of London having more babies! Birth rate increased while death rate fell in many boroughs across London.
Answer:
The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.
Answer:
Waterproof covering
Explanation:
It's the desert so it's pretty dry...they'd want to soak up as much water as possible