Compare the methods of gas exchange in adult amphibians to gas exchange in reptiles.

Hemoglobin is the compound in red blood cells that carries oxygen to the body. the distribution of hemoglobin in women in g/dl of blood is approximately normally distributed with mean 14 and standard deviation 1. too little hemoglobin, and you're anemic. 2. too much, and (unless you live at high altitudes), you can have other problems.

Archaebacteria use for movement. celia flagella pili cell walls

What is the most common structure of volcanoes?