« previous next »
« previous next »
 

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?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

A comparison of monophyletic, paraphyletic, and polyphyletic taxonomic groups. A comparison of monophyletic, paraphyletic, and polyphyletic taxonomic groups.
Ground cover and colour such as shown here in (a) white sand Ground cover and colour such as shown here in (a) white sand
skeletal muscle consists of a group of fibers held together by connective tissue. It is enclosed in ... skeletal muscle consists of a group of fibers held together by connective tissue. It is enclosed in ...
Group Project Meme Group Project Meme
Video: Hydrogen bonds - role in the body

For a complete list of videos, visit our video library