To survive, animals need to find food. Some predators have developed special vision in order to look for prey. Processing eyesight that can be four to five times __26__  than ours, eagles can spot a rabbit from several milesaway. Owls, __27__ hunt at night, have huge eyes for capturing plenty of light and detecting tasty treats in the dark.Like owls, cats see well at night. Their pupils become large circles to let more __28__ in. However, they can’t detect colors. Bees and butterflies, on the other hand, have a range of color vision that extends into ultraviolet – __29__that humans can’t see. For a long time, humans didn’t know how other animals see. Recent studies have shed light on a marvelous world of vision diversity. Understanding the way animals __30__ the world can tell us a lot about their survival strategies.

       A fossil is the remains of an animal or plant that lived long ago. Most fossils are created from the hard parts of ananimal’s body,__41__ bones, shells, or teeth. Some are__ 42__  , like dinosaur footprints. Some are so tiny that you need a microscope to__ 43__  them. Most fossils are found in rocks __44__ from the mud or sand that collects at the bottom of oceans, rivers, and lakes. Fossils provide scientists with__45__   to ancient animals.

       A vegetarian is a person who does not eat meat, poultry, and fish. Vegetarians eat__46__ fruit, vegetables,grains, seeds, and nuts. Many vegetarians eat eggs and/or dairy products but avoid hidden animal products __47__beef and chicken stocks, lard, and gelatin.

      People are vegetarians for many reasons, including __48__for personal health and the environment or spiritualreasons. People may become vegetarians for one reason, and then later on__  49__ some of the other reasons as well.According to the American Diabetes Association, vegetarians are at a lower risk for developing heart disease, diabetes,high blood pressure and breast cancers. This is__50__ a healthy vegetarian diet is typically low in fat and high in fiber.Though being a vegetarian can be a healthy lifestyle, be sure you fully understand why you are choosing vegetarianism.