Question

All plants give out o2 during day and co2 during night

Answer 1

Answer:

I don't understand that what is o2 and co2? Please rewrite question.

Answer 2

Plants give out carbon dioxide not only at night but during the day too. It happens because of the process of respiration in which plants take in oxygen and give out carbon dioxide. As soon as the sun rises another process called photosynthesis starts, in which carbon dioxide is taken in and oxygen is given out.