Yup its Niccolo Machiavelli & The Prince
The answer is D. We use oxygen to breathe and make carbon dioxide . Plants take the carbon dioxide to photosynthesis and make oxygen.
Thanks to the physical properties of matter such as size, shape, and density, mixtures can also be separated back into their different kinds of matter. One way mixtures can be separated is through filtration. Filtration is the passing of matter through a filter to separate larger particles.