Using complete sentences, identify two ways humans in South and Southeast Asia have modified their water supply. What are the positive and negative effects of these modifications?
Answers
Answer:
Managing the whole water cycle in an urban setting has become a priority because of increasing urbanization in South and South-East Asia.
Clean water access and treatment of wastewater was a significant global concern. Urban water management and supply comprise 3 fundamental, however inter-related, services.
Firstly, clean drinking water is delivered to households without additional treatment. Providing home water-treatment capability by way of using of filters, flocculants, or solar disinfection to make drinking water safe.
Secondly, wastewater collection from both homes and from industrial and commercial sources which would require adequate treatment and disposal afterward in an environmentally-friendly way.
Third is the efficient disposal of storm water, particularly during the monsoon seasons. Implementing rainwater harvesting systems to accumulate and store rainwater for drinking or re-charging underground aquifers
Disadvantages of the above modifications
Rainwater Harvesting: Rainfall is impossible to forecast and poor runoff can also minimize rainwater production, or not. The rainfall in all areas is not the same. Predicting rainfall is also challenging. Therefore, in areas with minimal rainfall it is not advisable to rely on rainwater alone for all your water requirements
Home Water Treatment: Home water treatments may help remover heavy metals such as mercury and chlorine, however they may not be able to remove pesticides. Solar disinfectants is not suitable for improving the quality of huge volumes of water. It does not greatly help in increasing the water quantity or reducing water shortages.
Answer:
Responses may vary but should include some or all of the following information:
Explanation:
Humans in South and Southeast Asia have modified the water supply in two major ways. The first is by building dams and embankments to conduct flood management. People living in these regions found a need to control flood waters because they are faced with severe monsoons regularly. Many people live on the flood plains, so monsoons can become very dangerous. Dams and embankments can control flood waters and divert them away from where people live. However, when water is dammed or diverted, its natural flow is changed, preventing sediments from flowing naturally downstream. This can cause the rivers to flood other areas. People in South and Southeast Asia also use water supplies to conduct an activity known as aquaculture. This means that they control and grow seafood and marine products for human use. They create pens, dams, and nets to fence in areas of water where they can grow their products. This is beneficial because it can create a consistent food supply for citizens and an economic product that can be sold. Aquaculture can also have negative effects. For example, fencing in areas of water can change or even destroy marine animals’ natural habitats. Fishing is also an important way in which humans interact with their water supply. When humans fish, they can supply food for members of their population and create an economic commodity that they can export to other parts of the world. However, fishing can also have negative consequences. For example, when people overfish in certain regions, they can wipe out populations of fish and other marine life, which can decrease the biodiversity of certain animals. Boats can also cause water pollution, which can kill marine life and prevent the growth of coral reefs.