what is water treatment plant

is singing in a little loud voice 1 pollutant of noise pollution?

what is noise pollutiomn?

What are fossil fuels?

how does plastic affect the sea?

LAND POLLUTION

what is agricultural waste???

whatis gravity?

what is full form of cng?

what is asthma?

what is tuberculosis?

what is jaundice?

what is cholera?

what is typhoid?