|
|
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
In 1864, the first barbiturate (barbituric acid) was synthesized.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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.
![(a) Savanna baboons live in female-philopatric groups, among which males migrate. (b) Chimpanzees li](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_23_20433921.jpeg)
![Sexual swellings are one way for females to advertise their mating availability, thereby inducing ma](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_23_204361867.jpeg)