This printable crossword puzzle on the topic of Ecology & Evolution has 11 clues. Answers range from 3 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
the backbone and all the other bones of a vertebrate
animals without backbones
to divide into groups
_______ animals' temperature stays the same most of the time
whales have lungs and breathe
Mammals breathe air with ______.
Most living things are either plants or __________.
Plants are usually held in the ground by ________.
________ animals' temperature changes with the surrounding temperature.
Animals must find _____; most plants make their own.
Animals with backbones.