1) The longer the quarrying goes on the less and less recources we will have, soon leading to no more recources
Answer:
Propanoic acid
option D is correct answer
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2
<span>Answer: the average kinetic energy of the particles.
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<span>Jusitification:
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<span>Temperature and heat energy are closely related.
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<span>While heat is the kinetic energy of the particles of a substance which is transferred from a hotter substance to a cooler one, the temperature is a measure of the average kinetic energy of the particles in a substance.
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<span>The relatively high kinetic energy the particles of a warm substance is transferred to the cooler one by the motion (vibration or translation) of the atoms of molecules. The energy transferred is heat energy.</span>
Hydrogen fusion is the answer. It is also known as <span>hydrogen burning. </span>