Answer:
Because no one wants to live in a rainforest
Explanation:
The answer is "<u>selection</u>".
Industrial/Organizational (I/O) psychology is both the investigation of behavior in authoritative and work settings and the utilization of the techniques, certainties, and standards of brain research to people and gatherings in hierarchical and work settings. I/O psychologists are flexible conduct researchers represent considerable authority in human conduct in the work environment. I/O psychologists perceive the relationship of people, associations, and society, and they perceive the effect of elements, for example, expanding government impacts, developing buyer mindfulness, ability deficiencies, and the changing idea of the workforce.
The power to print money and start a treaty with a foreign government cannot be caries out at a state government level but can be carried out at a national level.
I'm pretty sure it's B and C.
(((SHORT EXPLAINATION)))
Thomas Jefferson bought 800,000 miles worth of land from the French, (West of the Mississippi River)
Mexico was given up I'm pretty sure out of fear - and they gave the U.S. Califoria sometime too.
Hope this helps!