39.Normally how many times the human heart beats in a minute? [A] 72 [B] 75 [C] 82 [D] 85 Show Answer 40.Liver-oil of fish is rich in ____: [A] Vitamin A [B] Vitamin C [C] Vitamin D [D] Vitamin E
Your heart rate is the number of times each minute that your heart beats, which is normally between 60 and 100 times per minute for adults.
