Answer:
For a limb to regenerate, you need bone, muscle, blood vessels and nerves. There are adult stem cells, a kind of undifferentiated cell that can become specialized, that regenerate muscle, but they don't seem to activate.
A.) Oxygen is an output......
Answer - <span>C) Trees and shrubs provide shade, which keeps the water temperature cooler. Lower temperatures allow the water to hold more oxygen, which in turn creates a healthier habitat for the trout.</span>
Reasoning - The back story is if the water temperature is being changed. It will affect the trout indirectly warming the water. In turn if you have shades and shrubs to provide it for cooler areas it will preserve O2 a Certain Habitat for the Species.