Overview. Complex carbohydrates are made up of sugar molecules that are strung together in long, complex chains. Complex carbohydrates are found in foods such as peas, beans, whole grains, and vegetables. Both simple and complex carbohydrates are turned to glucose (blood sugar) in the body and are used as energy.
A turtle is an animal in armor. Much of its body lies within a protective shell, which has openings for the turtle's four chunky legs, short tail, and head. When danger threatens, many turtles pull legs, tail, and head into the shell.
Most turtles have shells like houses that they can pull their heads and limbs into. But a sea turtle can't pull into its shell at all. The shells of most kinds of sea turtles are made of bone and cartilage (the same bendable stuff your ears are made of.) These are covered with thin plates called scutes. But the leatherback's shell is different.