Plants use CO2 for photosynthesis during the day . But at night , they also respire ,i.e.,take in O2 and release CO2 into the air . This doesn't help much in the reduction of CO2 . Then why do people ask to plant more trees ? Is there a more effective method to reduce CO2 in the air ?

Plants use CO2 for photosynthesis during the day . But at night

1.	Plants use CO2 for photosynthesis during the day . But at night , they also respire ,i.e.,take in O2 and release CO2 into the air . This doesn't help much in the reduction of CO2 . Then why do people ask to plant more trees ? Is there a more effective method to reduce CO2 in the air ?
Answer» Plants use CO₂ for photosynthesis during the day . But at night , they also respire ,i.e.,take in O₂ and release CO₂ into the air . This doesn't help much in the reduction of CO₂ . Then why do people ask to plant more trees ? Is there a more effective method to reduce CO₂ in the air ?