Ques: For a given medium, sound has a slower speed at lower temperatures.  If Mary is playing music in her room and the heater starts working, causing the temperature to rise, what happens to the speed of the soundwaves her radio is generating increases or decreases?
Ans: increases

Ques: With fewer trees, the air is drier and droughts are more common.  The logging company in your town is proposing they clear cut several thousand acres of trees. If they do so, the chances of droughts in your area will decrease or increase?
Ans: increase

Ques: Nations that have more industry produce more hazardous waste.  The United states has more industry than South Korea. Therefore, there is more hazardous waste in South Korea or the United States?
Ans: the United States

Ques: Developing nations will also increase demands on natural resources as they build more factories.  Rupert is evaluating the impact of factories on the natural resources of developing nations. If Nation X added 100 new factories, it will decrease or increase demands on their natural resources?
Ans:
increase