When stated as a percentage, the useful energy transferred by a device divided by the total energy supplied to the device is known as the device's what one word completes the sentence?

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Observations show that interstellar clouds can have almost any shape and