Which of the following is a true

Energy can be produced by living things.
Energy cannot be changed from one form to another.
Energy can change from one form to another.
Energy can only change into heat energy.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Which of the following best describes the formation of plasma?

Which element is the least metallic between cadmium, silver, zinc, or iron?