How can you tell the difference between a Schizophrenic brain from a normal brain

Non-invasive brain imaging techniques such as Magnetic Resonance Imaging (MRI) and Computerized Tomography (CT), have documented structural differences between normal brains and those with schizophrenia.

Explanation:

it would lead to upper respiratory infections and pneumonia.

the correct answer is:

a population changes in response to a change in the environment.