Answer the following question given this paragraph: Carbon is an element. By itself, it's a black solid. You can see a lump of carbon in Figure below . Carbon is incredibly important because of what it makes when it combines with many other elements. Carbon can form a wide variety of substances. For example, in the air, carbon combines with oxygen to form the gas carbon dioxide. Q: A black solid by itself, this element is incredibly important because of what it makes when it combines with many other elements, including oxygen? Choices: - lead - dioxide - hydrogen - carbon A:
carbon

Answer the following question given this paragraph: Two approaches to logical thinking developed over the centuries. These two methods are inductive reasoning and deductive reasoning . Inductive reasoning involves getting a collection of specific examples and drawing a general conclusion from them. Deductive reasoning takes a general principle and then draws a specific conclusion from the general concept. Both are used in the development of scientific ideas. Q: What are the two methods of logical thinking? Choices: - Observation and result - cathartic and deductive - inductive and dynamical - inductive and deductive A:
inductive and deductive

Answer the following question given this paragraph: Nuclear reactors use fission reactions to vaporize water. The resulting steam is used to drive a turbine, which generates electricity. Q: Nuclear reactors use fission reactions to vaporize water, producing steam to drive a turbine and generate what? Choices: - light - oil - fuel - electricity A:
electricity

Answer the following question given this paragraph: Microfilaments , shown in Figure below (b) , are made of two thin actin chains that are twisted around one another. Microfilaments are mostly concentrated just beneath the cell membrane, where they support the cell and help the cell keep its shape. Microfilaments form cytoplasmatic extensions, such as pseudopodia and microvilli, which allow certain cells to move. The actin of the microfilaments interacts with the protein myosin to cause contraction in muscle cells. Microfilaments are found in almost every cell, and are numerous in muscle cells and in cells that move by changing shape, such as phagocytes (white blood cells that search the body for bacteria and other invaders). Q: What structures formed of twisted actin chains are found in almost every cell, and are numerous in muscle cells and cells that move by changing shape? Choices: - RNA - DNA - vesicles - microfilaments A:
microfilaments