Although i wouldn't refer to it as a substance, Carbohydrates are a nutrient that provides the energy for organisms. Simple carbohydrates like glucose (humans and animals) or Fructose (plants, specifically of the fruit), are used as easy energy by the organism. Complex carbohydrates are used to store large amounts of energy until the body needs it, and are usually large chains of glucose (in humans and animals) or fructose and sucrose (in plants). These chains form up Glycogen and Starch (humans/animals and plants, respectively).
Hope this helps, If you have any further questions on the topic feel free to comment.
From life-threatening illness or injury is often contingent upon his/her ability to follow through—first with learning and then consistently completing an array of self-care measures designed to sustain and regain health.
He will probably get fired, because he knew that he was supposed to lock it up, but he didn't and there could have been serious info in there that someone unauthorized personnel read.
hope this helps :)