What drives plate tectonics in the earths interior

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions