When dopamine levels are elevated this reward pathway reinforces the use of the drug.
Dopamine is an organic chemical that is produced in our bodies, and is related to reward-motivated behavior.
The anticipation of most types of rewards increases the levels of dopamine in the brain, and many drugs also increase dopamine as well as blocking its reuptake into the neurons follow release.
The resource that is found in the middle east is D. oil.
D. The Judiciary Act of 1789, officially titled "An Act to Establish the Judicial Courts of the United States," was signed into law by President George Washington on September 24, 1789. Article III of the Constitution established a Supreme Court, but left to Congress the authority to create lower federal courts as needed. D is the answer