premise: camouflage is a kind of adaptation for hiding in an environment sent2: an animal is a kind of organism sent3: leaves are a part of trees sent4: an environment looks like the things it contains sent5: an example of camouflage is an organism looking like its environment sent6: a forest environment contains many trees sent7: an adaptation has a positive impact on an animal 's survival.
hypothesis: sound travels fastest through solid and slowest through gas