Carbon
reason being that if you've studied the carbon cycle, you know that carbon goes into the atmosphere and is absorbed by plants. but if we produce more CO2 than plants can absorb, it causes more rays from the sun to be concentrated to the earth, rather than being reflected away
Water, wind, glaciers, ice, and waves are the answers I got when I looked it up. But obviously that's five so I believe you could just take ice out since glaciers is there
C=C, the double carbon bond creates a kink in the chain of carbons, and prevents the fats from stacking neatly and forming a solid. The double carbon bonds present in canola oil are why it is a liquid at room temperature, while the lack of such bonds in butter allows for the molecules to lay flat on one another, making butter a solid.