Plz answer these two questions. Plz mates I have asked this twice or thrice but, none answer it according to me. Answer in Detail.
If you don't believe me that I have asked this twice or thrice go and see my profile
Answers
It is hard to believe in these times of abundance and technological development that we are unable to provide solutions to the three biggest water challenges facing humanity. These three challenges can be summarised as follows:
1. Water scarcity
2. Water contamination and lack of treatment
3. Irregular distribution of water resources
1. Water scarcity: The 22 countries in the Arab region, including the 14 members of the United Nations Economic and Social Commission for Western Asia (ESCWA), are the countries with the greatest scarcity of water on the planet. At least 12 of these countries suffer from an outright shortage of water, with less than 500 m3 of water resources available per capita per year. The region of the Middle East is one of those that is investing the most in alternatives to generate new renewable sources of water, such as desalination, to fight this shortage. The Arab Water Security Strategy (2010–2030) proposes measures to respond to these challenges, including the execution of projects aimed at efficient use of water, projects involving unconventional water resources, fighting climate change, integrated management of water resources, and water security projects. The results have not been long in coming, and enormous progress is already being observed in all of the aforementioned areas.
2. WATER CONTAMINATION AND LACK OF TREATMENT : The city of Jakarta, with a population of 9 million, generates 1.3 million m3 of wastewater per day, of which less than 3% is treated. At the other extreme is Sidney, with a population of 4 million, which treats almost all of its wastewater (1.2 million m3 per day). Worldwide, it is estimated that more than 80% of the wastewater is not collected or treated. Untreated wastewater and contaminated water affect marine ecosystems in both oceans, also endangering the health of the population.
3. Irregular distribution of water resources: The large population concentrations in Latin America do not always overlap with the abundant sources of water, and approximately one-third of the region’s population lives in arid or semi-arid zones. Northern Mexico, northeast Brazil, the coast of Peru and northern Chile, among other areas, have significant difficulties to cover their water needs. Demographic growth, expansion of industrial activity (especially mining in the Andean countries) and the high demand for irrigation have led to a ten-fold increase in total water extraction in the last century, resulting in an irregular distribution of water resources. For example, Mexico has approved a plan for the Expansion of Distribution Networks in 13 divisions with an allocation of 2.1 billion pesos, for the construction of new installations, as well as the expansion of the distribution networks. Examples of large-scale distribution works in Mexico include the aqueducts of the Cutzamala System and the Vizcaino-Pacifico Norte aqueduct.
HOPE IT HELPS YOU. MARK IT AS A BRAINLIST