The correct answer is substance-related
Explanation: Substance-related disorders involve drugs that directly activate the brain's reward system. Activation of the reward system usually causes feelings of pleasure; The specific pleasure sensations evoked vary widely, depending on the drug. These drugs are divided into 10 different classes that have different but not completely different pharmacological mechanisms.
Answer:The Industrial Revolution was powered by burning coal, and big industrial cities began pumping vast quantities of pollution into the atmosphere.
Explanation:
Answer:
The French and Indian War resulted from ongoing frontier tensions in North America as both French and British imperial officials and colonists sought to extend each country’s sphere of influence in frontier regions. In North America, the war pitted France, French colonists, and their Native allies against Great Britain, the Anglo-American colonists, and the Iroquois Confederacy, which controlled most of upstate New York and parts of northern Pennsylvania
Explanation:
welcome!
Answer: 4 per m2
<span>To find out the population density of a certain
species, you must divide the number of organisms living in that habitat over
how big the area is. In this case, because there are 20 mice in an ecosystem
that is 5 square-meters big, then there would be 4 mice in every square-meter.</span>
All matter is made of tiny particles called atoms, molecules and ions. ... It is the motion of particles that creates a form of energy called thermal (heat) energy that is present in all matter. The partials in solids are tightly packed and can only vibrate
