Which is a quality of an effective reward incentive?

An electric shock can result in anything from a slight tingling sensation to immediate cardiac arrest. the severity depends on the amount of current flowing through the body, the current's path through the body, the length of time the body remains in the circuit, and the current's

What enzymes are presented in your saliva ?

How do you cure boredom at a hospital. i’ve been here for a week and may go crazy from looking at these ! hl