An Inconvenient Truth is all about global warming and how the temperature of the Earth is rising. Gore shows how the levels of greenhouse gases have significantly increased, especially since industrialization. This is a problem because these gases are trapped in the Earth's atmosphere which causes the temperature to rise and create more heat. According to Gore, the rise in temperature is causing the changes in weather patterns and the oceans to rise.
I think its an Idiom. I don't see like or as. So no simile. I don't see he is something like a marshmallow. - No metaphor. I also don't see a non-human thing doing human things- the grass was dancing in the wind. My answer would be an idiom.
