« previous next »
« previous next »
 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Solar Energy Input Varies with Latitude Solar Energy Input Varies with Latitude
Differential Grasshopper Differential Grasshopper
Identify each stage of the life cycle Identify each stage of the life cycle
Nursing Interventions According to Stage of Severity for Suicide Risk Nursing Interventions According to Stage of Severity for Suicide Risk
Environmental impacts vary with the stage of mining Environmental impacts vary with the stage of mining
Regulation can occur at any stage in the expression of genetic material in eukaryotes Regulation can occur at any stage in the expression of genetic material in eukaryotes
Video: Coronary Heart Disease

For a complete list of videos, visit our video library