(Question)
Given the fact that:  The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.  Answer the question:   John was looking at the rocks, and noticed something. The more the metamorphism in the rock, the difficulty to tell what it was Increased or Decreased?
(Answer)
Increased


(Question)
Given the fact that:  On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.  Answer the question:   Karen is feeling very warm, and starts to sweat. Her blood flow is increased, likely because the day is hot or cold?
(Answer)
hot


(Question)
Given the fact that:  Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.  Answer the question:   Rich breathed out. When he breathes in or out his chest seems larger?
(Answer)
out