|
|
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
![Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_07_16141450.jpeg)
![Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16181010.jpeg)