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Author Question: Which of the following was an obligation of a serf to his landlord? a. Yearly obligation to pay ... (Read 85 times) |
On average, the stomach produces 2 L of hydrochloric acid per day.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.