Ques: As greenhouse gases increase, changes will be more extreme.  John was looking at the climate model data in his office. He saw there were less changes as the amount of gases were Lower or Higher?
Ans: Lower

Ques: When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.  If Bob stops exercising, his heart muscle should become stronger or weaker?
Ans: weaker

Ques: The water table is higher when there is a lot of rain and lower when the weather is dry.  When you look at a lake before the rain the water levels are lower or higher?
Ans: lower

Ques: The upper rock layers are much younger.  The rocks that are on the surface of a volcano are young or old?
Ans:
young