Answer:
Water towers were needed to move water safely to the 7th floor and above. Although they looks like remnants of the past, they are still very much in use today. Using gravity to help supply the water pressure, water is fed to pipes throughout the building, providing water for everyday use like showers and drinking, as well as extinguishing a fire.
Explanation:
The best answer is
<span>A point on the PPC indicates maximum utilization of available resources.
The PPC is a representation of the maximum outputs, usually as a tradeoff between two goods, given maximum utilization of available resources. Naturally, producing one good leaves less resources and other inputs available for another good. </span>
Answer:
C: They both rely on art and scince for map-making
Explanation:
It isn't A, since ancient maps were not 3D at all. C is incorrect do to the first maps being found way before paper existed. D is incorrect because ancient maps were not all focused on the physical features and some were just to map out country borders, towns, etc. B just makes sense anyway, you use visuals to show where places are, science to know where the places go to map them.