According to the law of conservation of mass, in a chemical reaction, the mass of the reactant will always be different from the mass of the product.

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation

What part of the ear is names after tools, such as the hammer and the anvil?