Ques:Answer the following question given this paragraph: The greatest source of hazardous waste is industry. Agriculture is another major source. Even households produce a lot of hazardous waste. Q: What is greatest source of hazardous waste? Choices: - study - water - heat - industry A:

Ans:industry
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Ques:Answer the following question given this paragraph: Q: Management programs based on population-regulating factors have helped prevent the extinction of many? Choices: - abundant species - keystone species - omnivores - endangered species A:

Ans:endangered species
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Ques:Answer the following question given this paragraph: Artificial Methods of Asexual Reproduction These methods are frequently employed to give rise to new, and sometimes novel, plants. They include grafting, cutting, layering, and micropropagation. Grafting Grafting has long been used to produce novel varieties of roses, citrus species, and other plants. In grafting, two plant species are used; part of the stem of the desirable plant is grafted onto a rooted plant called the stock. The part that is grafted or attached is called the scion. Both are cut at an oblique angle (any angle other than a right angle), placed in close contact with each other, and are then held together Figure 32.26. Matching up these two surfaces as closely as possible is extremely important because these will be holding the plant together. The vascular systems of the two plants grow and fuse, forming a graft. After a period of time, the scion starts producing shoots, and eventually starts bearing flowers and fruits. Grafting is widely used in viticulture (grape growing) and the citrus industry. Scions capable of producing a particular fruit variety are grated onto root stock with specific resistance to disease. Q: During grafting, the part of the plant that is grafted is called? Choices: - roots - stock - stem - scion A:

Ans:scion
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Ques:Answer the following question given this paragraph: When geologic and climatic conditions are changing, evolution may occur more quickly. Thus, long periods of little change may be interrupted by bursts of rapid change. This model of the timing of evolution is called punctuated equilibrium . It is better supported by the fossil record than is gradualism. Q: Fossil records support the idea that periods of little change may be interrupted by bursts of rapid change, an evolutionary model contrasted by what? Choices: - elitism - darwinian - minimalism - gradualism A:

Ans:
gradualism
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