« previous next »
« previous next »
 

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

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.

Cholesterol Sources Cholesterol Sources
Sources of Trans Fat in the Diet Sources of Trans Fat in the Diet
Sources of hepatitis C infection. Sources of hepatitis C infection.
Sources of acid deposition Sources of acid deposition
Some drugs are still derived from natural sources Some drugs are still derived from natural sources
Sources of Variation in Traits Among Individuals of a Species Sources of Variation in Traits Among Individuals of a Species
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library