(12)
(5) How does river water get polluted?
( 6 ) Which water sources are polluted by gutters?
(4) What natural resources are essential for sustenance of me on Earth
Answers
Explanation:
ans 1 --Dirty water containing chemicals is put back in the river. Water used for cooling is warmer than the river itself, and this is also a form of pollution. People are sometimes careless and throw rubbish such as bottles and crisp packets directly into rivers. Pollution kills water plants and animals.
ans 2 ---Traditional “curb and gutter” drainage systems rapidly move polluted stormwater runoff to streams and rivers, causing increased flooding, erosion, and water pollution downstream. into runoff. Most stormwater pollution is derived from diffuse sources closely related to everyday municipal and personal activities.
ans 3 ---The three most important nonliving resources for us is the air we breathe, the water we drink and the land we live on. Without these three resources, we cannot exist. In this section, we will discuss the importance of air, water, and soil for the sustenance of the living beings.
Answer:
(5)The river water gets polluted by garbage which is thrown by the people who lives near the river or other people's of city muncipality ...secondly by the carelessness of people's and water care taker