Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen?

• the hole in the ozone
• the greenhouse effect
• atmospheric pressure
• the inversion layer

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960

What is the largest carbon sink in the world?

• The Amazon
• The Oceans
• The Deserts
• The Forests

Earth's average temperature has increased 1°C in the past century. Which reason best explains this increase in temperature?

• lower levels of ozone in the atmosphere

• lower levels of nitrogen in the atmosphere

• higher levels of carbon dioxide in the atmosphere

• higher levels of oxygen in the atmosphere

Which of the following gases is NOT a greenhouse gas?

• carbon dioxide (CO2)

• nitrogen (N2)

• water vapor (H20)

• methane (CH4)

Which of the following are evidence of climate change?

• extreme weather events

• increase in the average global temperature

• melting of polar ice caps

• all of the above

Which of the following is contributing to an increase in carbon dioxide (CO₂) in the atmosphere?

• deforestation

• burning fossil fuels

• burning down trees

• all of the above

Melting of glaciers and polar ice caps....

• will result in cooler temperatures in the Arctic
• will result in sea-levels rising
• Will have no effect on ecosystems
• None of the above

Which of the following is produced by cows?

• Carbon Dioxide

• Water Vapor

• Argon

• Methane

an area's climate changes and it gets LESS rainfall. what can happen?

• more hurricanes

• more forest fires

• floods

• more diseases