What are the different of pre test and post test

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Amalignant tumor that originates within glandular tissue is called

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in