How are conventional sewer systems and Toilets of the future different

When u make a choice the experience from what would have been your second option is called

How was the method of making pottery by using coils of clay better than simply shaping the clay by hand? it prevented pottery from cracking when fired. it created a watertight seal. it produced more attractive pottery. the pottery could be cut or stamped with designs.

Moral principles is what ? a. appreciation b. tariff c. fiscal d. ethics