Investigation 1 Any evidence of life A scavenger They decompose too quickly Caves, tracks, and burrows To tell about animal behavior + the environment They decompose Tree resin that has hardened Accumulate In water that has dissolved oxygen The chemical change that occurs when a plant or animal dies Amber Hard Parts (example: bones and shells) To make a mark by pressing Animals without bones and shells Clams, snails, and coral The mineral material dissolves A preserved animal body or its imprint When the plant/animal is buried in fine mud Cellulose and lignin Fossils and ancient life NO AIR Brownish-yellow sticky material that sometimes come out of trees Water with oxygen