【正文】 re in both country A and B, while in country C more money was spent on books(12%)than on leisure(12%).Overall, as wealth decreased, the percentage of students’ spending on nonessential items PicThis bar chart shows the changes in the amount of oil discovered worldwide every 5 years from 1950 to 2005 and the predicted figures from 2010 to 1950, the world oil discovery stood at 20 billion barrels a year, which grew dramatically over the next 15 years to reach a peak at approximately 56 billion barrels in , from this year onwards, the growth of oil discovery was suddenly replaced by a sharply downward trend, with some ups and downs, to approximately 6 billion barrels a year in 2005, about 1/10of its peak amount in is predicted that 7 billion barrels of oil will be discovered worldwide in the year 2010, and this figure is forecast to decline steadily to an alltime low of only 3 billion barrels in conclusion, this chart shows that world oil discovery peaked in the 1960s but has been declining for over 40 years, and this trend is expected to continue into the near bar chat shows information about the areas of land damaged by human activities in four major continents of the area of land damaged in Africa and Asia are similar, totalling approximately 1,200 million hectares for each, while in Australia and Europe the numbers are considerably lower, averaging between 300and 400 at the causes behind land damages, it can be seen that in African, Europe and especially Australia, breeding is the leading cause of land loss, damaging approximately 500, 100 and 400 million hectares of land es treecutting which takes away slightly larger areas of land than farming in all the three shows a slightly different picture, where treecutting activities have led to the largest amount of land loss(450 million hectares).Breeding and farming account for the remaining damage(380 and 420 million hectares respectively).Overall, breeding causes the most pervasive damage to land around the lineOverall, the world population rose sharply from less than 500 million in the 1400s to 6 billion in 2000, a growth of 12 times over 600 increase was more dramatic after 1800 and only in the 1700s was there an obvious decline( billion to billion).The ozone hole was at its smallest size of about 400 thousand square km in 1980, but 20 years later, it was enlarged by 9 times to million square only period when there was a reduction in size was in the early 1990s(from 2 to million square km).流程圖diagramThe diagram shows the stages in the process of making es from the cacao tree, which is grown in parts of south America, Africa and tree produces large red pods which contain white cocoa when the pods are ripe, they are harvested, the beans are removed and they are fermented for several days in large wooden the fermenting process, the beans turn , the brown beans are spread in the sun to are then put in large sacks and transported by train or this, the beans are taken to a chocolate factory where they are roasted in an oven at temperatures of between 250 and 350 degree being roasted, the beans are crushed and the outer shell is part is not needed for making , the inner part of the bean is pressed and liquid chocolate is produced.(pic)The chart describes how water is obtained to the figure, the first step of obtaining water outdoors is to find a hole with green plants on its , remove the green plants in the middle and put a container , cover the hole with a plastic sheet and place two stones on both ends of it to secure its third stone is laid on the middle of the plastic sheet so that the middle part is also the lowest the sun shines on the green plants in the hole, water evaporates from these vapour rises up and then cools down to form water drops on the plastic there is more and more water, it flows along the sheet to accumulate on the lowest , water falls down into the container directly under the middle , water is collected successfully through evaporation from green In cool climate special attention is given to the use of building materials that have a high thermal is used on the outside of heavy materials such as concrete, brick or kind of material stores heat and slowly releases it while external insulation ensures that all heat absorbed by wall materials is released inside the positioning of the building and large windows facing winter sunlight also assist to passively heat the roof has an extreme angle to assist with snow runoff and roof overhang does not interfere with in warm climate require the opposite and reflective roof material aim to keep heat from the sun are placed under