The graph shows how the amount of water used worldwide changed between 1900 and 2000.
Throughout the century, the largest quantity of water was used for agricultural purposes, and this increased dramatically from about 500 km3 to around 3,000 km3 in the year 2000. Water used in the industrial and domestic sectors also increased, but consumption was minimal until mid-century. From 1950 onwards, industrial use grew steadily to just over 1,000 km3, while domestic use rose more slowly to only 300 km3, both far below the levels of consumption by agriculture.
The table illustrates the differences in agricultural consumption in some areas of the world by contrasting the amount of irrigated land in Brazil (26,500 km2) with that in the D.R.C (100 km2). This means that a huge amount of water is used in agriculture in Brazil, and this is reflected in the figures for water consumption per person: 359 m3 compared with only 8 m3 in the Congo. With a population of 176 million, the figures for Brazil indicate how high agricultural water consumption can be in some countries.
The information given by the bar charts is about the changes in the numbers of marriage and divorce in US from 1970 to 2000, and the marital status of American adults in the two separate years.
According to the first chart, the number of marriages saw a downward trend during the three decades. It dropped from 2.5 million in 1970 to 2 million in 2000. In terms of the number of divorces, it was always lower than that of marriages. The data of divorces reached a record high (nearly 1.5 million) in 1980 when it was followed by a gentle decrease to only 1 million in 2000.
As we can see from the second chart, in 1970, married people had the largest proportion which was 70%, while the divorced group had the the smallest percentage, nearly 65 times lower than the former group. Interestingly, the proportion of never married people and that of widowed ones alike were similar (around 10%). In 2000, although the number of married people dropped to 60%, it was still the most one. Widowed citizens also decreased a bit and became the fewest group. Moreover, the percentage of never married people and that of divorced ones alike experienced an increase, to 20% and 10% respectively.
In conclusion, after the year 1980, both the number of marriages and that of divorces witnessed a decline, while the percentage of never married people and that of divorced individuals had a gentle increase.