Answer: respiration, carbon dioxide, respiration
I'd say your answer would be a 50%-50% chance. So it would be false.
I hoped that helped!
The answer looked for in this question is catalyst. They have the ability to speed up the reaction by lowering the activation energy of the reaction. However, it is not consumed during the reaction. The amounts used is usually small compared.
D - Noble Gases im pretty sure
Although volcanoes should <u>not</u> be considered "<u>harmless</u>," there are dormant volcanoes that are harmless until they are no longer dormant. Some of these dormant volcanoes are Fourpeaked Mountain and Mount Bird.
Hope this helps!