What are the similarity and differences between an open and closed system? (earth science) .

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 is the next step in muscle contraction after the actin changes shape? (apex)

Types of scientific inquiry that biologist engage in that cannot be completely controlled