When helena was 3 years old, a traumatic brain injury required the removal of her right cerebral hemisphere. now, helena is a healthy high school senior who lives a normal life. her success best illustrates the importance of: ?

Her success best illustrates the importance of PLASTICITY.
In psychology, brain plasticity refers to the inherent ability of the brain to change and adapt as a result of experience. Brain plasticity is also called neuroplasticity and it involves the alterations of neural synapses and pathways as a result of environmental, behavioral or neural changes.

They use it to react carbon dioxide with water to make a sugar called glucose. Theglucose is used in respiration, or converted into starch and stored. Oxygen is produced as a by-product. This process is called photosynthesis.