A red blood cell has a diameter of approximately 8 micrometers, or 0.008 A model represents its diameter as 8 um. What is the ratio of model size to actual size ?

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms