MST4.E.LE.3.1a: Each animal has different structures that serve different functions in growth, survival, and reproduction.
wings, legs, or fins enable some animals to seek shelter and escape predators
the mouth, including teeth, jaws, and tongue, enables some animals to eat and drink
eyes, nose, ears, tongue, and skin of some animals enable the animals to sense their surroundings
claws, shells, spines, feathers, fur, scales, and color of body covering enable some animals to protect themselves from predators and other environmental conditions, or enable them to obtain food
some animals have parts that are used to produce sounds and smells to help the animal meet its needs
the characteristics of some animals change as seasonal conditions change (e.g., fur grows and is shed to help regulate body heat; body fat is a form of stored energy and it changes as the seasons change)