In the process of melting rock, (a) water and silica both increase the melting temperature (b) water increases the melting temperature, but silica decreases the melting temperature (c) water decreases the melting temperature, but silica increases the melting temperature.
(the melting temperature; (b); ) (silica; increases; the melting temperature) (water; increases; the melting temperature) (silica; decreases; the melting temperature (c) water)
the melting temperature silica water silica
(b) increases increases decreases
the melting temperature
the melting temperature
the melting temperature (c) water