HomeBiologyIn air % of oxygen and carbon dioxide is 243. In air % of oxygen and carbon dioxide isBy Admin / September 14, 2025 Oxygen 20%, CO2 0.03% Oxygen 50%, CO2 50% Oxygen 30%, CO2 0.05% Oxygen 25%, CO2 0.02% ✅ The correct answer is option A.
2. Which of the following statement about Homeostasis is incorrect Leave a Comment / Biology, Homeostasis MCQs / By Admin