What two things should Zara keep in mind to make sure that the food her restaurant serves is free of chemical contaminants?

According to the loco mass the mass of reactants and products

What do science, technology, and disease have to do with each other?

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.