Send the following on WhatsApp
Continue to ChatOxygen accounts for ____ % of totals human body mass? https://preparationpoint.info/biology-mcqs/oxygen-accounts-for-____-of-totals-human-body-mass/
Oxygen accounts for ____ % of totals human body mass? https://preparationpoint.info/biology-mcqs/oxygen-accounts-for-____-of-totals-human-body-mass/