<u>changes </u><u>in </u><u>abiotic </u><u>factors</u> is the most appropriate answer for this question.
Hope it helps you...
(by Benjemin)
Answer:
The natural home or environment of an animal, plant, or other organism.
Explanation:
Positron Emission Tomography scan of the brain of cocaine addicts showed that the drug affects how the brain use glucose. Cocaine users' brain cannot use glucose efficiently and there are also reduced metabolic activity in other areas of the brain.
