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? Choices: - oil - food - sugar - fuel A:
fuel
(Question)
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? Choices: - noise pollution - light pollution - sound pollution - indoor air pollution A:
(Answer)
indoor air pollution
Ques: 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? Choices: - skin - rectum - liver - stomach A:
Ans: stomach
(Q).
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? Choices: - atomic group - thermal group - molecular group - functional group A:
(A).
functional group
Ques:Answer the following question given this paragraph: The radiative zone is the next layer out. It has a temperature of about 4 million degrees C. Energy from the core travels through the radiative zone. The rate the energy travels is extremely slow. Light particles, called photons, can only travel a few millimeters before they hit another particle. The particles are absorbed and then released again. It may take 50 million years for a photon to travel all the way through the radiative zone. Q: What do you call the light particles that travel through the radiative zone? Choices: - neutrons - ions - electrons - photons A:

Ans:photons
Ques: Answer the following question given this paragraph: Nitrogen-fixing bacteria change nitrogen gas from the atmosphere to nitrates in soil. Q: What type of bacteria change nitrogen gas from the atmosphere to nitrates in soil? Choices: - hydrophylic bacteria - multicellular bacteria - spiral bacteria - nitrogen fixing bacteria A:
Ans:
nitrogen fixing bacteria