How is nail biting an unhealthy habit? and how could someone stop this habit?
explain your answer.

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

In 2009, 40% of all bicyclist fatalities occurred when the bicyclist, the driver, or both vehicle operators were

3reasons on how do friendship affect a teenager?