<span>A warm front occurs when a cold air mass retreats and is replaced by a warm air mass</span>
SUPPORT: The bones support the main frame of the human body to keep its shape.
PROTECTION: The bones protect certain organs such as the brain protected by the cranium.
MOVEMENT: Allows strength in moving muscles.
PRODUCTION: Bone marrow produces red blood cells.
STORAGE: It stores minerals like calcium.
<span>Mendeleev's periodic table was in error because when the elements were arranged by mass it resulted in several elements being placed in groups of elements with differing properties.</span>
