This printable word search puzzle on the topic of Ecology & Evolution contains 16 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.
nitrogenous compounds
nitrifying bacteria
ammonium compound
nitrogen fixation
denitrification
nitrification
putrefaction
nitrogen gas
decomposers
proteins
nitrites
nitrates
bacteria
animals
plants
urine