Answer the following question given this paragraph: To physically limit radiation doses, we use shielding, increase the distance from a source, and limit the time of exposure. Figure 32.10 illustrates how these are used to protect both the patient and the dental technician when an x-ray is taken. Shielding absorbs radiation and can be provided by any material, including sufficient air. The greater the distance from the source, the more the radiation spreads out. The less time a person is exposed to a given source, the smaller is the dose received by the person. Doses from most medical diagnostics have decreased in recent years due to faster films that require less exposure time. Q: Shielding should be used when receiving x-rays to limit exposure to what potentially harmful form of energy? Choices: - pollution - convection - evaporation - radiation A:
radiation
(Question)
Answer the following question given this paragraph: Weathered material washes off steep slopes and so does not stay in place to form soil. Soil forms where land areas are flat or gently undulating. Q: Soil forms where land areas are what? Choices: - merging - cool - solid - flat A:
(Answer)
flat
Ques: Answer the following question given this paragraph: Feldspar and quartz are the two most common silicates. In beryl, the silicate pyramids join together as rings. Biotite is mica. The silicate pyramids come together to create thin, flexible sheets. Compare the beryl and the biotite pictured below ( Figure below ). Q: What are the two most common silicates? Choices: - Analcime and Feldspar - Petalite and Quartz - Petalite and Analcime - feldspar and quartz A:
Ans: feldspar and quartz
(Q).
Answer the following question given this paragraph: Meanders form because water erodes the outside of curves and deposits eroded material on the inside. Over time, the curves shift position. Q: What form because water erodes the outside of curves and deposits eroded material on the inside? Choices: - inlets - cascades - caverns - meanders A:
(A).
meanders
Ques:Answer the following question given this paragraph: 24.3 Ecology of Fungi Fungi have colonized nearly all environments on Earth, but are frequently found in cool, dark, moist places with a supply of decaying material. Fungi are saprobes that decompose organic matter. Many successful mutualistic relationships involve a fungus and another organism. Many fungi establish complex mycorrhizal associations with the roots of plants. Some ants. Q: What are saprobes that decompose organic matter? Choices: - sponges - chordates - protists - fungi A:

Ans:fungi
Answer the following question given this paragraph: The partial geologic time scale in Figure below shows when some of the major events in animal evolution took place. The oldest animal fossils are about 630 million years old, so presumably animals evolved around that time or somewhat earlier. The earliest animals were aquatic invertebrates. The first vertebrates evolved around 550 million years ago. By 500 million years ago, most modern phyla of animals had evolved. The first terrestrial animals evolved about 50 million years after that. Q: The earliest animals were which kind of invertebrates? Choices: - insects - mammals - dinosaurs - aquatic A:
aquatic