1861. Medulla oblongata is a part of human ______?
✅ A. Brain
✅ A. Brain
✅ C. Absorption and re-emission of infrared radiation by the atmosphere
✅ C. Far
✅ B. Cast iron
✅ D. John Harrison
✅ A. heir
✅ D. Bone-marrow
✅ A. H2O
✅ B. Methyl Mercury
✅ C. not to