Energy-saving is important when electrical energy is used to produce what
sound a stove crops light oil motion Heat waves
A B C D E F G H
Energy-saving light bulbs are essentially fluorescent light bulbs.
Energy-saving is important when electrical energy is used to produce light
Energy-saving is important when electrical energy is used to produce what (A) sound (B) a stove (C) crops (D) light (E) oil (F) motion (G) Heat (H) waves