« previous next »
« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

world percentage of religion world percentage of religion
Instilling an eye ointment into the lower conjunctival sac Instilling an eye ointment into the lower conjunctival sac
Bones of the upper and lower extremities. Bones of the upper and lower extremities.
A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ... A scope display showing a normal Chevrolet Equinox MAF sensor at idle speed. the frequency is 2,600 ...
The pH scale is logarithmic. A low pH indicates acidic conditions, whereas a high pH indicates ... The pH scale is logarithmic. A low pH indicates acidic conditions, whereas a high pH indicates ...
Shattered Dreams Program Shattered Dreams Program
Video: Generalized life cycles for plants and animals Animation

For a complete list of videos, visit our video library