Answer the following question given this paragraph: Some species of animals are territorial . This means that they defend their area. The area they defend usually contains their nest and enough food for themselves and their offspring. A species is more likely to be territorial if there is not very much food in their area. Having a larger territory could mean more prey or food. Q: What is the term for animals that defend their area? Choices: - predatory - Grazing - contain - territorial A:
territorial
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Answer the following question given this paragraph: Purification of water for drinking and other uses is a complicated process. Heavy metals need to be removed, a process accomplished by addition of carbonates and sulfates. Lead contamination can present major health problems, especially for younger children. Lead sulfates and carbonates are very insoluble, so will precipitate out of solution very easily. Q: Is purifying water a simple or complicated process? Choices: - expensive - impossible - simple - complicated A:
complicated
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Answer the following question given this paragraph: Look at the scissors in Figure below . As you can see from the figure, scissors consist of two levers and two wedges. You apply force to the handle ends of the levers, and the output force is exerted by the blade ends of the levers. The fulcrum of both levers is where they are joined together. Notice that the fulcrum lies between the input and output points, so the levers are first-class levers. They change the direction of force. They may or may not also increase force, depending on the relative lengths of the handles and blades. The blades themselves are wedges, with a sharp cutting edge and a thicker dull edge. Q: Are scissors simple or compound machines? Choices: - lever - neither - simple - compound A:
compound
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Answer the following question given this paragraph: Sperm are tiny cells. In fact, they are the smallest of all human cells. They have a structure that suits them well to perform their function. Q: What type of cells are the smallest of all human cells? Choices: - egg - dna - meristematic - sperm A:
sperm
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