<span>Mammal is your answer hope this helps
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Oxygen is carried by blood to all your body cells to provide them with the fuel they need to function
Answer: Chemical weathering changes the composition of a rock, while physical weathering does not.
Explanation: The definition of a chemical change is a change that cannot be reversed and is caused by a chemical reaction. In this case, a chemical change to a rock would change the composition of the rock while physical changes may change the appearance of the rock, but not the composition.
Enzymes lower the activation energy of a chemical reaction.
Energy for the first one and life for the last
