This printable crossword puzzle has 10 clues. Answers range from 8 to 19 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
THE STRUGGLE FOR ORGANISM TO SURVIVE AS THEY FIGHT FOR THE SAME LIMITED RESOURCES
AN INTERACTION IN WHICH ONE ORGANISM KILLS ANOTHER FOR FOOD
A CLOSE RELATIONSHIP BETWEEN TWO ORGANISMS OF DIFFERENT SPECIES
A RELATIONSHIP BETWEEN TWO SPECIES WHERE BOTH BENEFIT
A RELATIONSHIP BETWEEN TWO SPECIES WHERE ONE BENEFITS AND THE OTHER IS NOT AFFECTED
A RELATIONSHIP BETWEEN TWO SPECIES WHERE ONE BENEFITS AND THE OTHER IS HARMED
THE SERIES OF CHANGES THAT OCCUR IN AN AREA WHERE NO SOIL OR ORGANISMS EXIST
THE SERIES OF CHANGES THAT OCCUR IN AN AREA WHERE THE ECOSYSTEM HAS BEEN DISTURBED, BUT WHERE SOIL AND ORGANISMS WILL EXIST
AN ORGANISM THAT CAN MAKE ITS OWN FOOD
AN ORGANISM THAT OBTAINS ENERGY BY FEEDING OFF ANOTHER ORGANISM