4. Give reasons: please answer
Answers
Answer:
Explanation:
1.Rivers are losing water for a variety of possible reasons, say the researchers, including the installation of dams and the use of water for agriculture. But in many cases the decrease in flow is because of climate change, which is altering rainfall patterns and increasing evaporation because of higher temperatures.so...........................
2. Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body normally gets rid of excess salt by having the kidneys produce urine, but it needs freshwater to dilute the salt in your body for the kidneys to work properly.so.................
3.Dam is a place where water is stored at a height in large volumes. They are called multipurpose projects because the water stored in them solves many purposes: Maintain the water level in the rivers and increase water level during droughts. Provide water to the agricultural fields by canals for irrigation.so...........