premise: things that are the same color blend into each other sent2: to blend into something means to be difficult to see in something sent3: being protected from predators has a positive impact on an animal's survival sent4: camouflage is used for protection by animals against predators sent5: an adaptation is a kind of inherited charactersitic that helps an animal survive / reproduce sent6: the coloration of parts of an animals are inherited characteristics sent7: gravel is usually gray in color sent8: camouflage is a kind of adaptation for hiding in an environment sent9: animals adapt to their environment.
hypothesis: an inclined plane increases the distance the object travels and decrease the force needed to move the object