6. the skeletal structure shown would be classified as part of which of the following?
a. axial skeleton
b. respiratory skeleton
c. appendicular skeleton
d. protective skeleton

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Non living: objects like rocks, buildings, and snow.living: animals, plants and humans.

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.