Long-sight defect could be corrected by using _____ lens? Short-sight defect could be corrected by a ________ lens?

✅ C. Vitamin K

✅ C. Cotton

✅ B. Pressure

✅ B. Snow

✅ B. Vitamin D

Sunlight exposure enables vitamin D synthesis in skin. Read more

✅ A. Pyrexia

✅ C. Oxygen

✅ B. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune