C) United states
it have the most greenhouse gases
3 hours because it dangerous
Because it doesnt give oxygen, cant do any human things, and it doesnt do anything a plant does, it just gives off fumes. example:plants can breed and breathe, it can grow. fire doesnt breathe it cant breed but it can grow.
The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
