Methylphenidate, morphine, and oxycodone are included in which class of drugs?

Which action best increases one’s stamina a) exercising when you feel like it b) saving so much that one like sleep c) refusing to exercise to save the energy needed to work d)exercising on a regular basis

In order to remain wellness the parts of the health triangle always need to be?

Whihc type of medicine kills cancer cells in the body, but also kills healthy cells