The answer is option B or "secondary succession occurs." Secondary succession is when an ecosystem is destroyed but because of some key factors such as surviving animals, soil, and other natural resources, those resources then bring the ecosystem back to life. Common ways secondary succession occurs is when you clear out land from trees, and wildlife. The soil of that land is still there, which means that soil will start the growth of grass, and new animals will come back to eat that grass, that land will slowly start to become an ecosystem again.
The type of method of neuroimaging that the doctor should
use in detecting a possible tumor that he thinks Samantha has is the MRI or
also known as the Magnetic Resonance Imaging. This is scan that will help in
recognizing a tumor in a person’s body.