Essay topics: The graph and table below give information about water use worldwide and water consumption in two different countries.

The line graph shows world water usage in three different departments from 1900 to 2000. This table shows water consumption in Brazil and Congo in 2000.

According to the line graph, it is mainly used in the agricultural sector. In 1900, about 500 square kilometers of water was used in agriculture around the world. It also increased in 1970, reaching 1800 km 3. Then in 2000, it soon rose to over 3000.

In 1900, industrial water and living water were only 50 km 3, the living water remained the same in 1960 and the industrial water increased to more than 1000 km 3 in 2000. Consumption of living water for 2000 was 500 km 3. It is half of industry

From this table it can be seen that in Brazil one person consumes 35,359 cubic meters of water and irrigation of the land consumes 26,500 cubic meters of water. The total population of Brazil in 2000 was 176 million people. The Congo has a population of 2 million people, the amount of irrigation water used is 100 square kilometers, and the water consumption per capita is 8 cubic meters.

After all, all sectors have increased water use worldwide, Brazil consumed more water than Congo in 2000.

The line graph shows that consumption of household water and industrial water in 1900 is less than 100 cubic kilometers and the consumption of agricultural water is much higher (about 500 cubic kilometers). House consumption of water was stable until 1962. Since 1930, the industry has expanded. In contrast, the water use of the agricultural sector increased rapidly until 1959 and then rapidly increased from the initial consumption of 400 cubic kilometers in 1900 to 3,000 cubic kilometers in 2000. Domestic Demand and Industrial Demand Water consumption has increased since 1965, but consumption of industrial water was higher than domestic water consumption. The total amount of water used in the world in 2000 was 400 cubic kilometers and the consumption of industrial water exceeded 1,000 cubic kilometers.

Recommendations for total water usage (not just drinking water) in the table below can be divided into various life stage groups. It is important to know that all the water you consume does not come from the liquid you drink. Most of the water actually comes from the food you eat. Foods rich in water are fresh fruits and vegetables, and soup. Caffeine containing and alcoholic drinks can cause dehydration and should be restricted

Groundwater or groundwater is freshwater in the gaps between soil and rock. It is water flowing through the aquifer under the groundwater. It may be useful to distinguish groundwater groundwater and deep groundwater (also called "fossil water"), which is closely related to groundwater and surface water. Groundwater has the same meaning as surface water: input, output, storage. The main difference is that because the rotation speed is slow, the groundwater storage volume is usually much larger than the surface water compared to the input volume. This difference makes it easier for humans to use groundwater unsustainably over a long period of time without having a serious impact. However, in the long term, the average penetration rate on the groundwater source is the upper limit of the average water volume of the water source.