Problem: OPTIONS:
- particles
- Phenols
- gas
- hydrocarbons
Q: Answer the following question given this paragraph: isolating the individual components, preservationists are better able to determine the condition of an object and those books and documents most in need of immediate protection. The simplest class of organic compounds is the hydrocarbons, which consist entirely of carbon and hydrogen. Petroleum and natural gas are complex, naturally occurring mixtures of many different hydrocarbons that furnish raw materials for the chemical industry. The four major classes of hydrocarbons are the alkanes, which contain only carbonhydrogen and carboncarbon single bonds; the alkenes, which contain at least one carboncarbon double bond; the alkynes, which contain at least one carboncarbon triple bond; and the aromatic hydrocarbons, which usually contain rings of six carbon atoms that can be drawn with alternating single and double bonds. Alkanes are also called saturated hydrocarbons, whereas hydrocarbons that contain multiple bonds (alkenes, alkynes, and aromatics) are unsaturated. Q: The simplest class of organic compounds is the what? A:
Answer: hydrocarbons

Problem:OPTIONS:
- lung
- brain
- abdomen
- heart

Answer the following question given this paragraph: Cardiac muscle also contracts and gets shorter. This muscle is found only in the heart. The sudden burst of contraction forces blood throughout your body. When the cardiac muscle relaxes, the heart fills with blood. This rhythmic contraction must continue for your whole life, luckily the heart muscle never gets tired. If your heart beats 75 times a minute, how many times does it beat in an hour? A day? A year? 85 years?. Q: Cardiac muscle is only found where? A:
****
A: heart

Answer the following question given this paragraph: Longitudinal waves, like sound waves, have compression and rarefaction zones. The compression zones are where, for example in a sound wave traveling through air, the air molecules are densely packed. The rarefaction zones are areas where the air molecules are loosely packed, like a vacuum zone. Us teachers will often draw longitudinal waves as transverse waves, but remember the difference. Q: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed? A:
OPTIONS:
- molecules zones
- pressure wave
- measurements zones
- compression zones
compression zones

Answer the following question given this paragraph: All living things need water. For most human uses, water must be fresh. Of all the water on Earth, only 1 percent is fresh, liquid water. Most of the rest of Earth's water is either salt water in the ocean or ice in glaciers and ice caps. Q: Although humans require it, what accounts for just one percent of all water on earth? A:
OPTIONS:
- snow
- salt water
- glaciers
- fresh water

Answer: fresh water

Question: Answer the following question given this paragraph: A: Breathing consists of inhaling and exhaling, and its purpose is to move gases into and out of the body. Oxygen needed for cellular respiration is brought into the body with each inhalation. Carbon dioxide and water vapor produced by cellular respiration are released from the body with each exhalation. Q: How is carbon dioxide and water vapor that is produced by cellular respiration released? A:
OPTIONS:
- peroxidation
- fermentation
- evaporation
- exhalation
Answer: exhalation

input: OPTIONS:
- lightning
- waves
- rains
- winds Now, answer this question: Answer the following question given this paragraph: Surface currents are like streams flowing through the surface of the ocean. They are caused mainly by winds. Earth's rotation influences their direction. This is called the Coriolis effect. Surface currents may affect the climate of nearby coasts. Q: What are surface currents mainly caused by? A:
A:
output:
winds