Fill In the Blanks
Instruction:
In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
Volcano’s eruption
Volcanoes blast more than 100 million tons of carbon dioxide into the atmosphere every year but the gas is usually . When a volcano erupts, carbon dioxide spreads out into the atmosphere and isn't in one spot. But sometimes the gas gets trapped under enormous pressure. If it escapes to the surface in a dense , it can push out oxygen-rich air and become deadly.
A
0/0
AnswersDiscussion
Frequency:
Source:
Order: