It is a physical change because only the states as being changes, not the actual bonds in the compound.
Answer: The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory system—as well as all the other systems—need nutrients and must get rid of metabolic wastes.
Explanation:
Thrust faulting:
type of reverse fault that has a dip of 45 degrees or less. If the angle of the fault plane is lower (often less than 15 degrees from the horizontal)
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Among all the choices given (copper, clay, plastic, and glass), only copper is metal. By being metallic, copper is then able to conduct heat well more than the other materials. This makes it more suitable for the the new equipment composition. Thus, the answer to this item is letter "D. Copper is conductive and will absorb heat to cook the food."