We produce carbon dioxide, plants take it in for photosynthesis.
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The beginning products (plants take these in to start photosynthesis) are h2o and co2
(Water and carbon dioxide )
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So you could say carbon dioxide is a beginning product in photosynthesis.
Hope this helps!
Diffusion is the movement of particles down a concentration gradient.
Osmosis is the movement of water particles.
If there is no gradient then the particles will not move and therefore neither diffusion nor osmosis can take place.
