Question: Answer the following question given this paragraph: PET is used in tires, photographic film, food packaging, and clothing. Polyester fabric is used in permanent-press clothing. Its resistance to wrinkling comes from the cross-linking of the polymer strands. Q: Polyester fabric's resistance to wrinkling comes from the cross-linking of what? A:
OPTIONS:
- algae strands
- velocity strands
- wool strands
- polymer strands
Answer: polymer strands

input with options: Answer the following question given this paragraph: Spiral galaxies have a rotating disk of stars and dust, a bulge in the middle, and several arms spiraling out from the center. The disk and arms contain many young, blue stars. Q: What type of galaxies have a rotating disk of stars and dust, a bulge in the middle, and several arms? A:
OPTIONS:
- pinwheel galaxies
- round galaxies
- spherical galaxies
- spiral galaxies
output: spiral galaxies

Q: Answer the following question given this paragraph: Potential energy is present in objects that are ______________. Q: Potential energy is present in objects that are what? A:

OPTIONS:
- crystals
- rigid
- unstable
- elastic

A: elastic

input: OPTIONS:
- multiply protons and neutrons
- subtract protons from electrons
- divide protons and neutrons
- add up protons and neutrons Now, answer this question: Answer the following question given this paragraph: The atomic weight of an element is a weighted average of its isotopes. Q: How do you determine the atomic weight of an element? A:
A:
output: add up protons and neutrons

Answer the following question given this paragraph: Vitamins are organic compounds that are essential in very small (trace) amounts for the maintenance of normal metabolism. They generally cannot be synthesized at adequate levels by the body and must be obtained from the diet. The absence or shortage of a vitamin may result in a vitamin-deficiency disease. In the first half of the 20th century, a major focus of biochemistry was the identification, isolation, and characterization of vitamins. Despite accumulating evidence that people needed more than just carbohydrates, fats, and proteins in their diets for normal growth and health, it was not until the early 1900s that research established the need for trace nutrients in the diet. Because organisms differ in their synthetic abilities, a substance that is a vitamin for one species may not be so for another. Over the past 100 years, scientists have identified and isolated 13 vitamins required in the human diet and have divided them into two broad categories: the fat-soluble vitamins, which include vitamins A, D, E, and K, and the water-soluble vitamins, which are the B complex vitamins and vitamin C. All fatsoluble vitamins contain a high proportion of hydrocarbon structural components. There are one or two oxygen atoms present, but the compounds as a whole are nonpolar. In contrast, water-soluble vitamins contain large numbers of electronegative oxygen and nitrogen atoms, which can engage in hydrogen bonding with water. Most water-soluble vitamins act as coenzymes or are required for the synthesis of coenzymes. The fatsoluble vitamins are important for a variety of physiological functions. The key vitamins and their functions are found in Table 18.8 "Fat-Soluble Vitamins and Physiological Functions" and Table 18.9 "Water-Soluble Vitamins and Physiological Functions". Table 18.8 Fat-Soluble Vitamins and Physiological Functions Vitamin. Q: Vitamins are organic compounds that are essential in very small amounts for the maintenance of normal what? A:

OPTIONS:
- respiration
- pigments
- calcium
- metabolism

Answer: metabolism

Q: Answer the following question given this paragraph: Figure below shows the mix of energy resources used worldwide in 2006. Fossil fuels still provide most of the world's energy, with oil being the single most commonly used energy resource. Natural gas is used less than the other two fossil fuels, but even natural gas is used more than all renewable energy resources combined. Wind, solar, and geothermal energy contribute the least to global energy use, despite the fact that they are virtually limitless in supply and nonpolluting. Q: Which fuels provide most of the world's energy? A:

OPTIONS:
- coal fuels
- pattern fuels
- artificial fuels
- fossil fuels

A:
fossil fuels