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38. Which disease in human beings is caused by bacterium known as Yersinia pestis? 37. Identify one importance of roof on a house? + 40. Give any one example of heat insulator. 41a). What is a vertebrate? 39. Write down one way animals depend on plants. SECTION B £55) CamScanner 36. How important is the garden below to a farmer? b) Mention any two vertebrate animals that use lungs for breathing.