The grammatical rules that dictate the proper method for combining words and expressions together for the purpose of communication is called .

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Iwould appreciate if someone could me.