Carbon dioxide and water are known as byproducts. Please take note that respiration and photosynthesis are basically the exact opposite of each other. Respiration takes diatomic oxygen or simply O2 from the atmosphere and changes it with carbon dioxide or CO2. On the other hand, photosynthesis takes out CO2 from the atmosphere and changes it with O2.
Both watershed and drainage basin
Lipids don't dissolve in water because of the different polarities. Water is polar and lipids are not polar which is why they don't dissolve. What this means is that they don't bond and don't share electrons and therefore don't mix.