The wooded habitat of the Grey Treefrog is larger and extends farther North, while the Green Treefrogâs swamp and marsh habitat is concentrated in the South. In the area in which Gray and Green Treefrogs overlap, both habitats occur but in different places. However, natural selection does not always go to the optimum. It only goes to what works. For instance, rabbits are herbivores, which have hind gut fermentation (fermentation of food after passing through the stomach). They have a special organ called a caecum which helps them digest their food.
Years down the road, âultimately the only thing you can really do to change that situation is a total joint replacement,â said Dr. James Gladstone, an orthopedic surgeon at Mount Sinai Hospital. So Bassaragh opted for an innovative way to fix his knee: by regrowing cartilage from his own cells.
Chondromalacia, also known as ârunnerâs knee,â is a condition where the cartilage on the undersurface of the patella (kneecap) deteriorates and softens.his rubbing can lead to deterioration in the patella, and then chondromalacia or runnerâs knee. Improper kneecap movement may result from: 1  poor alignment due to a congenital condition. 2  weak hamstrings and quadriceps (the muscles in the back and front of your thighs).