|
|
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
![Life-history cube, a classification of fish, mammals, and altricial birds based on three dimensionle](https://biology-forums.com/gallery/47/medium_33_22_09_11_9_40_13_182182.jpeg)
![Upper Paleolithic stone tools include blade-based tools as seen here being produced from a blade cor](https://biology-forums.com/gallery/47/medium_273287_22_02_15_10_29_17_208012178.jpeg)