Home » Chemistry mcqs » Pollution enters into the water system in ___________ waysPollution enters into the water system in ___________ ways by a) 1 b) 2 c) 3 d) 4 Related Posts:Deoxygenated blood first enters in _________ part in fishes?Percentage of water in brain cells is_______?Sperms released in water are carried to the…Breakdown of large molecules into smaller ones…___________ is concerned with cell secretions?___________ is used to relieve one kind of headache,…