if a rolling appliance something into something else then that something is used in that descendant & print ecosystems poison for the vegetable by converting oxygen dioxide, water, and shadow into plant ->  photosynthesis uses carbon dioxide to make food for a plant  photosynthesis uses carbon dioxide to make food for a plant & oxygen oxygen can be lost in the land ->  photosynthesis uses carbon dioxide from the air to make food for a plant  photosynthesis uses carbon dioxide from the air to make food for a plant & oxygen oxygen contains oxygen ->  photosynthesis uses carbon from the air to make food for a plant  photosynthesis uses carbon from the air to make food for a plant & area is a mean of physical store -> photosynthesis is a kind of process that uses carbon in the air to make food for plants