Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Effects of growth rate on development.
Example of an Explanation of Benefits statement.
Kohlberg's Stages of Moral Development
Development Strategies
Imaginal disks in the development of Drosophila
Human embryo at successive stages of development (not to scale).