More and more Americans are socially _____________.

the conditions and processes of a disease; the scientific study of a disease

Only _____________ and ________________

are non-members of the U.N.

What is the best meaning of this sentence:

"You would see people... plying their trades from the bottom stories of their houses."

in preparation or being planned

The ___________ founding countries who established the UN were united in their conviction that global-scale wars should be prevented at all costs in the future.

The main voting body of the U.N. is called ______________.

___________ graders who are heavy users of social media are 27 percent more likely to be depressed.

Weak social connections have health effects similar to smoking ___________ cigarettes a day.

Over the past ____________________, the planet's average temperature rose by ______________.

Minerals such as zinc, gold, ___________ and _______________, which are abundant in the Arctic, will become easier to extract.

What is the best meaning of this sentence:

"These monstrous facilities [factories] were often tucked away at the city’s fringe."

Able to live or function without support from others:

an official power or right to refuse to accept or allow something

to help something grow or develop

However, in the ________________ century, the Industrial Revolution moved work out of the home and into factories, which spewed smoke and sludge into the environment.

Today, ___________________ of the world’s population lives in urban areas.

Social isolation: a lack of contact between an individual and ___________.

a feeling of wanting something or someone very much

Overhaul:

to cover or surround an area

After the devastation of World War II, the leading nations of the world banded together to form an international _____________organization called the United Nations.

Teenagers are suddenly less likely to __________, less likely to leave the ___________ without their parents, more likely to put off the _______________ of adulthood.