The answer: 3, 2 ,1, 4.
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Start with: 3) plaque; then, 2) enamel decay; then, 1) dentin decay;
then, 4) pulp decay.
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Cardiovascular so you can pump oxygenated blood through the heart
You can decrease your fat by doing exercise
It sounds most like a generalized anxiety disorder but there could also be some OCD in there.