Alveoli in the lungs, fish gills and the villi in the small intestine are adapted so that they have short diffusion distance, big concentration difference and large surface area. This means that they ...
Diffusion is crucial in both single-celled and multi-celled organisms. In both single-celled organisms like prokaryotic bacteria and eukaryotic algae, oxygen and carbon dioxide molecules move by ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback