Why is the asteroid belt between Mars and Jupiter?

What is a coast of using technology to transport water? a.cities can be built in otherwise uninhabitable areas. b.crops can be irrigated and grown in new areas. c.floods can be averted in flood-prone areas. d.freshwater supplies can be depleted in an area.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Someone me with this: a mineral' is determined by its actomic structure.