What first comes to my mind is that one or more rivers feature very prominently in these civilizations: the Nile in the Egyptian and the Tigris and Euphrates in the Babylonian.
I believe B. the material is cooler and denser would be correct.
The colder something is, the more density it has. Earth's core is too hot to be very dense, so that's why I would go with B.
Answer:
you can try Google I'm not for sure tho
All plant life, and some would argue most energy on earth, is a result of the sun passing energy in the form of light energy. Plants consume light energy and grow, through photosynthesis.
If the suns energy no longer reached earth, the plants would not be able to photosynthesize any longer. So they would likely die. Also, it would be really cold.
