In an experiment to compare thermal conductivity of different materials such as iron, lead, aluminum copper and wood. The arrows on the rocks indicate the extent at which the Vaseline applied around a material melted when heat is applied. i. identify each of the materials labelled I, II, III, IVandV using the melting level of the Vaseline. ii. which material had the least melting of the Vaseline. iii. Give a reason for your answer in ii above iv. Arrange the materials in order of decreasing conductivity of heat .

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

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am i too late?

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the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

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