11
Lesson 11 of 84 · Globalization
Oceans and Marine Conservation
Oceans cover 71 percent of Earth and absorb much of its carbon dioxide. Overfishing, plastic pollution, and acidification threaten marine life. Marine protected areas and reduced plastic use help oceans recover.
Key Facts
1
The United Nations has 193 member nations.
2
The Universal Declaration of Human Rights was adopted in 1948.
3
Over 100 million people are displaced worldwide.
Check Your Understanding
Question 1
1 of 2What is the main purpose of the United Nations?