|
|
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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?
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.