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.
<em>Answer:</em>
Mutations in DNA that do not have an observable effect on the organism's phenotype.
<em>Method:</em>
Search Engine
Answer:
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere
Explanation:
