When two substances that have different temperatures touch each other,heat moves from one to the other by "convection" in which heat leaves its source and brings energy with it.
The core is made almost entirely of metal. specifically, iron and nickel. The answer is A. hope this help :)
I think it might be called the "tail." I might be getting this mixed up with a comet, but I THINK(emphasis on think ^^') they're similar in that aspect?? Sorry if this didn't help.
Answer:
Early residents of the Indus Valley created streets and buildings using a grid pattern.
