You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

[EX Q]: Paragraph: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.
 Question: If you tried to push a sack of feathers or a sack of hammers, both of the same volume, would it be easier to push the 
 Choices: A)sack of feathers 
B)sack of hammers?
[EX A]: sack of feathers

[EX Q]: Paragraph: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.
 Question: If you are able to add greenhouse gases the temperature will 
 Choices: A)go up 
B)go down
[EX A]: go up

[EX Q]: Paragraph: Chemical weathering increases as: Temperature increases: Chemical reactions proceed more rapidly at higher temperatures.
 Question: John was redoing the siding on his house when he noticed something interesting. As the temperature increases, the weathering effect 
 Choices: A)Decreases 
B)Increases
[EX A]:
Increases