This printable word search puzzle contains 17 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
greenhouse effect
climate change
greenhouse gas
Carbon Dioxide
stratosphere
thermosphere
troposphere
ozone layer
ionosphere
mesosphere
exosphere
Nitrogen
auroras
Methane
Oxygen
Argon
Ozone