Question

take 5 ml of water each from different water sources like pond , lake, well, hand pump, purifier water, and put into five test tubes separately. observe it carefully.test the colour clarity, smell and acidity of each of cases?

Class : 8
Topic : pollution of air and water .
Lab activity
Subject : Biological sciences​

Answer 1

Answer:

because every year most of the people throw waste material in lake pond ocean .they bath their animals so pollution com in this water