Answer the following question given this paragraph: 38.2 Bone Bone, or osseous tissue, is connective tissue that includes specialized cells, mineral salts, and collagen fibers. The human skeleton can be divided into long bones, short bones, flat bones, and irregular bones. Compact bone tissue is composed of osteons and forms the external layer of all bones. Spongy bone tissue is composed of trabeculae and forms the inner part of all bones. Four types of cells compose bony tissue: osteocytes, osteoclasts, osteoprogenitor cells, and osteoblasts. Ossification is the process of bone formation by osteoblasts. Intramembranous ossification is the process of bone development from fibrous membranes. Endochondral ossification is the process of bone development from hyaline cartilage. Long bones lengthen as chondrocytes divide and secrete hyaline cartilage. Osteoblasts replace cartilage with bone. Appositional growth is the increase in the diameter of bones by the addition of bone tissue at the surface of bones. Bone remodeling involves the processes of bone deposition by osteoblasts and bone resorption by osteoclasts. Bone repair occurs in four stages and can take several months. Q: Osseous tissue - the connective tissue that includes specialized cells, mineral salts, and collagen fibers - makes up what? Choices: - muscles - spine - ligaments - bone A:
bone
(Question)
Answer the following question given this paragraph: Q: What is it called when large objects are broken down into smaller pieces? Choices: - decay - metamorphosis - evolution - weathering A:
(Answer)
weathering
Ques: Answer the following question given this paragraph: prepared. A student measures the radioactivity of this source with a Geiger counter and observes 1500 counts per minute. She notices that the source was prepared 120 days before her lab. What fraction of the decays is she observing with her apparatus? (b) Identify some of the reasons that only a fraction of the s emitted are observed by the detector. Armor-piercing shells with depleted uranium cores are fired by aircraft at tanks. (The high density of the uranium makes them effective. ) The uranium is called depleted because it has had its 235 U removed for reactor use and is. Q: What 'counting' instrument is used to measure radioactivity? Choices: - Liquid Counter - ellie counter - pryor counter - geiger counter A:
Ans: geiger counter
(Q).
Answer the following question given this paragraph: mass, water should be a gas at room temperature (20C), but the strong intermolecular interactions in liquid water greatly increase its boiling point. Hydrogen bonding also produces the relatively open molecular arrangement found in ice, which causes ice to be less dense than water. Because ice floats on the surface of water, it creates an insulating layer that allows aquatic organisms to survive during cold winter months. These same strong intermolecular hydrogen-bonding interactions are also responsible for the high heat capacity of water and its high heat of fusion. A great deal of energy must be removed from water for it to freeze. Consequently, as noted in Chapter 5 "Energy Changes in Chemical Reactions", large bodies of water act as "thermal buffers" that have a stabilizing effect on the climate of adjacent land areas. Perhaps the most striking example of this effect is the fact that humans can live comfortably at very high latitudes. For example, palm trees grow in southern England at the same latitude (51N) as the southern end of frigid Hudson Bay and northern Newfoundland in North America, areas known more for their moose populations than for their tropical vegetation. Warm water from the Gulf Stream current in the Atlantic Ocean flows clockwise from the tropical climate at the equator past the eastern coast of the United States and then turns toward England, where heat stored in the water is released. The temperate climate of Europe is largely attributable to the thermal properties of water. Q: The thermal properties of what substance largely contribute to the temperature climate of europe? Choices: - lava - soil - clouds - water A:
(A).
water
Ques:Answer the following question given this paragraph: Air quality is a measure of the pollutants in the air. More pollutants mean poorer air quality. Poor air quality started to become a serious problem after the Industrial Revolution. Factories burned coal for energy. Gasoline burned by cars and trucks added greatly to air pollution. By the mid-1900s, air quality in many big cities was very bad. Incidents in London and in U. S. cities alerted people to the extent of the problem. It was clear that air quality needed to be protected. Q: Air quality is a measure of what in the air? Choices: - clouds - gases - water - pollutants A:

Ans:pollutants
Answer the following question given this paragraph: HFCs are used as a replacement for CFCs. The molecular structure of HFC134a is shown in this ball-and-stick model. Q: Hfcs are used as a replacement for what? Choices: - nitrofluorocarbons - pollutants - gases - cfcs A:
cfcs