Yes, because it is found and created naturally
It is d, a substance that participates in a chemical reaction. You can also tell it just by looking at the stem of the term :)
The answer is a) a rubber band
Answer:
Temperature and absolute brightness
Explanation:
The X-Axis of the diagram is heat, and it actually goes down in heat.
The Y-Axis is for brightness, and it works like a regular axis, meaning as it goes up, the number or unit of some sort, in this case luminosity, goes up.