« previous next »
« previous next »
 

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an
Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th Two important changes occur in the upper airway in croup:The epiglottis swells, thereby occluding th
Success is an iceberg Success is an iceberg
Comparison of traits associated with r-selection and K-selection Comparison of traits associated with r-selection and K-selection
Sexual Selection: Stalk-Eyed Flies Sexual Selection: Stalk-Eyed Flies
Responses to artificial and natural selection Responses to artificial and natural selection
Video: Molecules, Membrane Permeability and Structure

For a complete list of videos, visit our video library