Can someone clarify to me

what is thresholds of time ?

In the spring of 1989, thousands of protesters gathered in tiananmen square in beijing, china. they rallied around a plaster statue that resembled the statue of liberty which they called “the goddess of democracy.” these protestors were seeking a) united states assistance in gaining better health care. b) economic reforms which would allow more chinese exports. c) the boycott of the future olympic games scheduled for beijing. d) political reforms to allow more freedom of speech and political representation.

An individual who is experiencing a prolonged period of stress would likely have levels of circulating than an individual who was not experiencing stress.

Humans are the only animals capable of communication