Which of the following is a compound released into the atmosphere when fossil fuels are burned?

• CO₂ (Carbon Dioxide)

• O₃ (Ozone molecules)

• N₂ (Nitrogen)

• O₂ (Oxygen molecules)

Which region of the planet receives direct sunlight from overhead?

• The poles

• The region between 30 degrees north and 60 degrees north latitude

• The equatorial region

• No region of the planet receives vertical sunlight

What is an accurate description of the prevailing winds?

• Winds that blow in opposing directions.

• Winds that blow in one direction throughout the year.

• Winds that block UV rays from reaching Earth's surface.

• Winds that shift UV rays around different parts of Earth's atmosphere.

Trade winds, polar easterlies, and westerlies are an example of...

• The greenhouse effect

• The prevailing winds

• Convection currents

• Topography

El Niño can be accurately described as the global weather event in which...

• winds push warm water eastward in the Pacific Ocean.

• water is cooler than usual in the eastern Pacific Ocean.

• winds push warm water upward in the Atlantic Ocean.

• winds push warm air currents downward above Europe.

La Niña can be accurately described as the global weather event in which...

• winds push warm water eastward in the Pacific Ocean.

• water is cooler than usual in the eastern Pacific Ocean.

• winds push warm water upward in the Atlantic Ocean.

• winds push warm air currents downward above Europe.

What is the Montreal Protocol?

• An international agreement to reduce greenhouse gas emissions worldwide.

• An international limit on CFC production to protect the Ozone layer.

• Legislation passed in the United States in 1973 to protect endangered species.

• An international treaty to preserve biological resources.

Which option(s) is/are impact(s) of high UV radiation at Earth's surface?

• DNA damage

• Phytoplankton near the ocean's surface can be killed.

• The survival rate of amphibian eggs could decrease.

• All of the above.

Which answer choice lists the factors that influence surface ocean currents?

• Wind circulation and Earth's rotation

• Wind circulation and the greenhouse effect

• Earth's rotation and the greenhouse effect

• The Montreal Protocol and the greenhouse effect

What is the greenhouse effect?

• The process in which UV rays escapes Earth's atmosphere.

• The process where gases in the atmosphere reflect solar radiation.

• The process where gases in Earth's atmosphere absorb/reradiate solar radiation.

• The process where gas enters Earth's atmosphere after a solar flare.