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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Structure of the trachea, which extends from the larynx above to the main bronchi below. Structure of the trachea, which extends from the larynx above to the main bronchi below.
The site of nitrogen fixation in symbiotic root nodules The site of nitrogen fixation in symbiotic root nodules
Root Vegetables: Carrots "جزر" Root Vegetables: Carrots "جزر"
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Albinos lack pigment in the skin, hair, and eyes. Albinos lack pigment in the skin, hair, and eyes.
Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan Soybean plants in nitrogen-poor soil show how root nodules affect growth. Only the darker green plan
Video: Stroke volume

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