Problem: OPTIONS:
- oceans
- atmosphere
- molten core
- magnetic field
Q: Answer the following question given this paragraph: Another benefit of Earth's magnetic field is its use for navigation. People use compasses to detect Earth's magnetic north pole and tell direction. Many animals have natural "compasses" that work just as well. For example, the loggerhead turtle in the Figure below senses the direction and strength of Earth's magnetic field and uses it to navigate along migration routes. Many migratory bird species can also sense the magnetic field and use it for navigation. Recent research suggests that they may have structures in their eyes that let them see Earth's magnetic field as a visual pattern. You can learn more at this URL: http://www. smithsonianmag. com/science-nature/How-Do-Birds-Find-Their-Way-Home. html. Q: What part of earth do many animals use for navigation? A:
Answer: magnetic field

Problem:OPTIONS:
- decelerate
- increase
- offset
- accelerate

Answer the following question given this paragraph: Light is produced when charged particles accelerate . As a result changing electric and magnetic fields radiate outward. The traveling electric and magnetic fields of an accelerating (often oscillating) charged particle are known as electromagnetic radiation or light. Q: Light is produced when charged particles do what, frequently in the form of oscillating? A:
****
A: accelerate

Answer the following question given this paragraph: taste, and nutrition of butter. (Preservatives and antioxidants are also added. ) In most commercial peanut butter, the peanut oil has been partially hydrogenated to prevent it from separating out. Consumers could decrease the amount of saturated fat in their diet by using the original unprocessed oils on their foods, but most people would rather spread margarine on their toast than pour oil on it. Many people have switched from butter to margarine or vegetable shortening because of concerns that saturated animal fats can raise blood cholesterol levels and result in clogged arteries. However, during the hydrogenation of vegetable oils, an isomerization reaction occurs that produces the trans fatty acids mentioned in the opening essay. However, studies have shown that trans fatty acids also raise cholesterol levels and increase the incidence of heart disease. Trans fatty acids do not have the bend in their structures, which occurs in cis fatty acids and thus pack closely together in the same way that the saturated fatty acids do. Consumers are now being advised to use polyunsaturated oils and soft or liquid margarine and reduce their total fat consumption to less than 30% of their total calorie intake each day. Fats and oils that are in contact with moist air at room temperature eventually undergo oxidation and hydrolysis reactions that cause them to turn rancid, acquiring a characteristic disagreeable odor. One cause of the odor is the release of volatile fatty acids by hydrolysis of the ester bonds. Butter, for example, releases foul-smelling butyric, caprylic, and capric acids. Microorganisms present in the air furnish lipases that catalyze this process. Hydrolytic rancidity can easily be prevented by covering the fat or oil and keeping it in a refrigerator. Another cause of volatile, odorous compounds is the oxidation of the unsaturated fatty acid components, particularly the readily oxidized structural unit. Q: What is produced during the hydrogenation of vegetable oils? A:
OPTIONS:
- complete fatty acids
- rich fatty acids
- partially-hydrogenated fatty acids
- trans fatty acids
trans fatty acids

Answer the following question given this paragraph: 25.5 Dispersion: The Rainbow and Prisms The spreading of white light into its full spectrum of wavelengths is called dispersion. Rainbows are produced by a combination of refraction and reflection and involve the dispersion of sunlight into a continuous distribution of colors. Dispersion produces beautiful rainbows but also causes problems in certain optical systems. Q: What is the spreading of white light into its full spectrum of wavelengths called? A:
OPTIONS:
- condensation
- saturation
- radiate
- dispersion

Answer: dispersion

Question: Answer the following question given this paragraph: 30.2 Discovery of the Parts of the Atom: Electrons and Nuclei Atoms are composed of negatively charged electrons, first proved to exist in cathode-ray-tube experiments, and a positively charged nucleus. All electrons are identical and have a charge-to-mass ratio of. Q: Atoms are composed of negatively charged electrons and a positively charged what? A:
OPTIONS:
- DNA segment
- neutron
- bond
- nucleus
Answer: nucleus

input: OPTIONS:
- mitosis
- arthritis
- fibrosis
- osteoporosis Now, answer this question: Answer the following question given this paragraph: Figure 7.22 Osteoporosis Osteoporosis is an age-related disorder that causes the gradual loss of bone density and strength. When the thoracic vertebrae are affected, there can be a gradual collapse of the vertebrae. This results in kyphosis, an excessive curvature of the thoracic region. Q: What is the age-related disorder that causes the gradual loss of bone density and strength? A:
A:
output:
osteoporosis