Baking powder is primarily used as a leavening agent in baked goods and products. It is a combination of cornstarch, cream of tartar and baking soda. The main observation that suggests that it is a mixture of substances is that fact that it produces a gas which facilitates the rising of the baked goods.
I apologize, what is the question to this. I don’t understand the question you are asking.
Relative age is where you compare how old an object is versus others objects around the same time. It isn't the exact age.
Absolute age is the actual age of an object.
