Trophic Pyramid JigSaw Puzzle

This is a 3d jigsaw puzzle that represents the trophic pyramid. The pieces are 0.2 mm apart, so they take a little effort to get them apart. It also has the 10% rule on it.I like to introduce a phenomenon to students before we learn about it. Let me know what you think. I have only printed the blank puzzle, not this one. But it should work.