UIEA_U3Chap6_LectureVideo

What was the lecture about?

• sulfur dioxide

• air pollution problem

• health problems

• benefits of trees

The gas that causes air pollution:_________________

• carbon dioxide

• sulfur dioxide

• oxygen

• carbon monoxide

What are the two areas covered by the Big Picture? (click all correct answers)

• air pollution

• health

• trees

• environment

Urban areas also means ________________.

The urban population worldwide in 2005 was over ____________.

• 6 billion

• 3 billion

• 60 billion

• 66 billion

What is the chemical symbol for sulfur dioxide?

• so2

• SO2

• So2

• sO2

The material that is burnt to supply heat or power is called _____________

Examples of fuel (click all correct answers)

• gas

• oil

• coal

• plastic

Problems that sulfur dioxide can cause to people. (check all correct answers)

• difficulty breathing

• difficulty eating

• watery eyes

• burning nose ans throat

• body pain

Sulfur dioxide`s effect on the environment (click all correct answers)

• damages forest

• increases acid level in water

• changes soil

• kills birds