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Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Location and cellular arrangement of the adrenal glands. Location and cellular arrangement of the adrenal glands.
Cellular Respiration Cellular Respiration
Directionality of the hydrogen bond Directionality of the hydrogen bond
Contrast of ventilation and external and internal respiration. Contrast of ventilation and external and internal respiration.
Mechanism of Respiration in Human Mechanism of Respiration in Human
Overview of aerobic respiration. Overview of aerobic respiration.
Video: Cleavage and Implantation Animation

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