This printable word search puzzle contains 21 hidden words in a 24x24 letter grid. Words go horizontally and vertically. This word search is also available to download as a Microsoft Word document or a PDF.
Tree planting
Thermosphere
Ozone layer
Troposphere
Hydrosphere
Lithosphere
GwaposiSir
Mesosphere
Atmosphere
Recycling
Exosphere
Biosphere
Animals
Oxygen
Plants
Rivers
Oceans
Mantle
Earth
Crust
Core