This topic contains a solution. Click here to go to the answer
|
|
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
![Human embryonic stem cells stained with Tra-1-60 (green) - a stem cell marker and nestin (red), a ne](https://biology-forums.com/gallery/47/medium_71476_01_04_13_3_28_35.jpeg)
![Functional MRI Scans These scans of human brains show localized average increases in neural activity](https://biology-forums.com/gallery/47/medium_6_31_03_15_7_18_49_211892310.jpeg)