You are given a sentence and your task is to generate another sentence that supports the given input.

Cold-blooded or ectothermic animals like reptiles or fish have body temperatures that change according to the surrounding temperature.
Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in temperature.

Introduction The skeletal system consists of bones and their associated connective tissues-- tendons, ligaments, and cartilage..
Bones, cartilage, and ligaments make up the skeletal system.

An example of this type of crystal is sodium chloride (NaCl).
Compounds like sodium chloride form structures called crystals.