If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.
Body size and population density of herbivorous mammals
A Biologist at Work
Superior view of heart valves illustrating position, size, and shape of each valve.