What process do cells use to release energy without oxygen? * cellular respiration
O digestion
O fermentation
O photosynthesis

- Rate of respiration is relatively constant throughout the day. It can be concluded that plants do not rely on sunlight to respire.

- Rate of photosynthesis varies at different times of the day and it occurs at its greatest at noon. It can be concluded that plants rely heavily on sunlight to photosynthesise.

Hope this helps:)