The slow rate at which diffusion occurs over large distances.
It should be a food web, because there are various producers and consumers, and the bears and humans eat each other
To the heart: pulmonary vein
Away from heart: pulmonary artery
are you gonna give me the user and pass
Answer:
In order to ascertain the total magnification when viewing an image with a compound light microscope, take the power of the objective lens which is at 4x, 10x or 40x and multiply it by the power of the eyepiece which is typically 10x.