(Q).
If electricity uses an electrical conductor, then an electrical conductor is required for the operation of:? Answer choices: - water current - electricity - satellites - energy - to move people - gas lamps - trains - lightning
(A).
electricity

(Q).
If water vapor is formed when gas changes into a liquid by reducing heat energy, then water vapor is formed when gas changes into a liquid by reducing what? Answer choices: - direct energy - electrical energy - kinetic energy - heat energy - solar flares - Temperature - energy - water power
(A).
heat energy

(Q).
If water moving downhill due to the force of gravity can dissolve carbon in sedimentary rock, then what moving downhill due to the force of gravity can dissolve carbon in sedimentary rock? Answer choices: - river - Raft - pebbles - rain - water - sand - oxygen - craters
(A).
water