Accessibility links
Skip to main content
Skip to main Navigation
Skip to Search
About Learning English
Beginning Level
Intermediate Level
Advanced Level
US History
Video
Follow Us
Languages
Search
Search
Previous
Next
Breaking News
Quiz - Study: Icy Clouds May Have Permitted Flowing Water on Mars
April 30, 2021
Question 1 / 4
How does the story describe Earth’s greenhouse effect?
When vapors in the atmosphere heat up the surface
When gases in the atmosphere trap heat from the sun
When vapor-filled clouds block heat from the sun
When gases in the atmosphere rise to form clouds
Submit Answer
Next Question
Quiz - Study: Icy Clouds May Have Permitted Flowing Water on Mars
Back to top
XS
SM
MD
LG