Cual seria el costo económico de buscar un ambiente limpio

What is the difference between an independent and a dependent variable?

In keeping their culture unchanged what do canadians fear the most?

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.