- A lack of light would slow down the rate of photosynthesis as light provides the energy for the process. Even on sunny days, light may be limited to plants which are shaded by trees.
- If it's cold, the enzymes do not work effectively and this will slow down the rate of photosynthesis
- If there is too little carbon dioxide, then the rate of photosynthesis will slow down. Carbon dioxide may be limited in an enclosed space, e.g. in a greenhouse on a sunny day where…