A stoma (plural: stomata) is a tiny pore found on the underside of a leaf. When open, carbon dioxide can diffuse from the atmosphere, where it is present at approximately Catm= 0.70 mg/L, between the L = 5 μm thick guard cells, into the relatively well mixed air cavity within each stoma, and from the cavity into cells that consume it during photosynthesis. What is the mass flux of carbon dioxide into an open stoma that has a cross-sectional area of A = 2 μm2, a diffusion coefficient of D = 0.16 cm2/s, and a steady air cavity concentration of Cs = 0.04 mg/L?

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Photosynthesis

Plants have a capacity that we humans can only imagine— the ability to produce food from sunlight. Sure, we can prepare some dishes that we can savor on, but it become possible because of the plants (as they serve as a producers of all the raw materials required). Photosynthesis is the method of assembling carbohydrates with the aid of sunlight.