If the HMS Beagle had completely bypassed the Galapagos Islands, Darwin would have had a much poorer understanding of the

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.

What are the four basic classes of organic molecules how do they differ structurally and functionally

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?