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Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Relative sizes of the sporophyte and gametophyte generations of bryophytes, ferns, and seed plants. Relative sizes of the sporophyte and gametophyte generations of bryophytes, ferns, and seed plants.
Variations in seed germination and seedling growth patterns Variations in seed germination and seedling growth patterns
Two common types of seed germination Two common types of seed germination
Seed banks Seed banks
An 8th grade class develops a linear model that predicts the number of cheerios (a small round ... An 8th grade class develops a linear model that predicts the number of cheerios (a small round ...
Anatomy of a seed. Left, corn (Zea Mays), a monocot; right, pea (Pisum sativum), a eudicot Anatomy of a seed. Left, corn (Zea Mays), a monocot; right, pea (Pisum sativum), a eudicot
Video: Medullary osmotic gradient: countercurrent multiplier, urea recycling & vasa recta countercurrent exchange

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