How to keep rivers or lakes clean. i don't ant any answer from google i want you to think and answer
atleast 3 points

answer:

they use some chemical and spread it onto the water near the bank   and as the water moves it spreads. that or the organisms living in it keep it clean.

explanation:

answer:

deal with chemicals and medicines properly and don't litter

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

the use of “as” in the example to draw the resemblance. some more examples of common similes are given below. common examples of simile. our soldiers are as brave as lions. her cheeks are red like a rose. he is as funny as a monkey. the water well was as dry as a bone. he is as cunning as a fox. simile introduces vividness into what we say.