input: OPTIONS:
- thermal
- solar
- isolation
- gravity Now, answer this question: Answer the following question given this paragraph: A very important point here is that the vertical motion of these two balls is identical. That is, they each fall exactly the same distance vertically in each succeeding second. The constant horizontal velocity of the blue ball has no effect on its accelerated vertical motion. Therefore, the vertical motion of the blue ball can be analyzed exactly the same as the vertical motion of the red ball. Q: What force pulls bodies with mass together? A:
A:
output: gravity

Answer the following question given this paragraph: Research is being done into alternative crops for biofuels. A very promising alternative is algae. Algae appears to be a better biofuel than corn. Algae is much easier to convert to a usable fuel. Growing algae requires much less land and energy than crops. Algae can be grown in locations that are not used for other things. For example, they can be grown in desert areas where food crops are not often grown. Corn must be grown where food crops are grown. This can reduce the land and water available for growing food. Algae can be fed agricultural and other waste, so valuable resources are not used. Much research is being done to bring these alternative fuels to market. Q: What is algae easier to covert into that corn is currently used for? A:

OPTIONS:
- oil
- food
- sugar
- fuel

Answer: fuel

Problem: OPTIONS:
- noise pollution
- light pollution
- sound pollution
- indoor air pollution
Q: Answer the following question given this paragraph: One source of indoor air pollution is radon gas. Radon is a radioactive gas that may seep into buildings from rocks underground. Exposure to radon gas may cause lung cancer. Another potential poison in indoor air is carbon monoxide. It may be released by faulty or poorly vented furnaces or other fuel-burning appliances. Indoor furniture, carpets, and paints may release toxic compounds into the air as well. Other possible sources of indoor air pollution include dust, mold, and pet dander. Q: Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution? A:
Answer: indoor air pollution

Problem:OPTIONS:
- skin
- rectum
- liver
- stomach

Answer the following question given this paragraph: Your large intestine is not just made up of cells. It is also an ecosystem , home to trillions of bacteria known as the "gut flora" ( Figure below ). But don't worry, most of these bacteria are helpful. Friendly bacteria live mostly in the large intestine and part of the small intestine. The acidic environment of the stomach does not allow bacterial growth. Q: Friendly bacteria live mostly in the large intestine and part of the small intestine, because what organ is too acidic? A:
****
A: stomach

Answer the following question given this paragraph: With over twenty million known organic compounds in existence, it would be very challenging to memorize chemical reactions for each one. Fortunately, molecules with similar functional groups tend to undergo similar reactions. A functional group is defined as an atom or group of atoms within a molecule that has similar chemical properties whenever it appears in various compounds. Even if other parts of the molecule are quite different, certain functional groups tend to react in certain ways. Q: What is the germ for a group of atoms within a molecule that reacts similarly anywhere it appears in different compounds? A:
OPTIONS:
- atomic group
- thermal group
- molecular group
- functional group
functional group

Answer the following question given this paragraph: Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, aretes, and horns. Q: Which type of glaciers form several unique features through erosion, including cirques, aretes, and horns? A:
OPTIONS:
- line glaciers
- deep glaciers
- icebergs
- valley glaciers

Answer:
valley glaciers