I guess that is:
Within the capillaries of the lungs, gases are exchanged by diffusion; O2 diffuses from the alveolus to the bloodstream and CO2 diffuses from the bloodstream to the alveolus.
All of those are similar to each other because they are all weeds, or in other words they are all different types of grasses.
<span>The mirror is used to focus light through the opening in the in the stage of the microscope.</span>
probably younger.----less sediment would mean less time.
The correct answer Is true
